FPUS55 KRIW 210319 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 917 PM MDT Wed May 20 2026 WYZ020-211000- Natrona County Lower Elevations- Including the city of Casper 917 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows in the mid 30s. Southwest winds around 10 mph, becoming north after midnight. .THURSDAY...Mostly cloudy. Numerous rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. Breezy with highs in the lower 50s. North winds around 10 mph, increasing to 15 to 20 mph with gusts up to 30 mph in the afternoon. Chance of rain 80 percent. .THURSDAY NIGHT...Cloudy. Rain showers, snow showers with a slight chance of thunderstorms in the evening, then rain and snow showers likely after midnight. Snow accumulation up to 1 inch. Breezy with lows in the lower 30s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest around 10 mph with gusts up to 20 mph after midnight. Chance of precipitation 80 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 50s. West winds around 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Southwest winds around 10 mph. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 70s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MEMORIAL DAY...Sunny. Highs around 80. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 70s. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Breezy with lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. $$ WYZ017-211000- Wind River Basin- Including the cities of Riverton and Shoshoni 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the upper 30s. Southwest winds around 10 mph, becoming east after midnight. .THURSDAY...Scattered snow showers in the morning. Rain showers with isolated thunderstorms. Snow accumulation up to 1 inch. Breezy with highs around 50. North winds 15 to 25 mph with gusts up to 35 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers likely in the evening, then partly cloudy after midnight. Breezy with lows in the lower 30s. North winds 15 to 20 mph with gusts up to 30 mph in the evening. Chance of rain 60 percent. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. Southwest winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. Southeast winds around 10 mph, becoming southwest after midnight. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the upper 70s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MEMORIAL DAY...Mostly sunny. Highs in the lower 80s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 40s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 70s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ WYZ018-211000- Lander Foothills- Including the city of Lander 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the mid 30s. Southwest winds around 10 mph. .THURSDAY...Showers with isolated thunderstorms. Scattered snow showers, mainly in the morning. No snow accumulation. Highs in the upper 40s. North winds 10 to 15 mph. Chance of precipitation 90 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers likely with a chance of snow showers in the evening, then partly cloudy after midnight. Lows around 30. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy. Highs in the upper 50s. East winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. Southwest winds around 10 mph. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the upper 70s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MEMORIAL DAY...Mostly sunny. Highs around 80. .MONDAY NIGHT...Partly cloudy. Lows in the upper 40s. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 70s. Chance of rain 20 percent. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Breezy with lows in the mid 40s. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 20 percent. $$ WYZ028-211000- Rock Springs and Green River- Including the cities of Rock Springs and Green River 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the mid 30s. Southwest winds around 10 mph. .THURSDAY...Rain showers. Scattered snow showers with isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. No snow accumulation. Breezy with highs in the mid 50s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers, snow showers likely with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Little or no snow accumulation. Lows around 30. Northeast winds 10 to 15 mph with gusts up to 30 mph, becoming southeast after midnight. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. Highs in the upper 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows around 40. .SUNDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. .TUESDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Breezy with highs around 70. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. Lows around 40. .WEDNESDAY...Mostly sunny. A slight chance of. Breezy with highs around 70. $$ WYZ013-211000- Jackson Hole- Including the city of Jackson 917 PM MDT Wed May 20 2026 .TONIGHT...Cloudy with isolated thunderstorms. Scattered rain showers late this evening, then rain and snow showers after midnight. Snow accumulation up to 1 inch. Lows in the lower 30s. Chance of precipitation 80 percent. .THURSDAY...Rain showers, snow showers with isolated thunderstorms in the morning, then numerous rain showers, scattered thunderstorms and numerous snow showers in the afternoon. Snow accumulation up to 1 inch. Highs around 50. North winds around 10 mph in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. North winds around 10 mph with gusts up to 25 mph in the evening. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs around 60. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY...Mostly sunny. Highs in the upper 60s. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows around 40. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. $$ WYZ003-211000- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 917 PM MDT Wed May 20 2026 .TONIGHT...Cloudy. Numerous rain showers late this evening, then rain and snow showers after midnight. Snow accumulation up to 1 inch. Breezy with lows in the mid 30s. North winds 15 to 20 mph. Gusts up to 40 mph after midnight. Chance of precipitation 80 percent. .THURSDAY...Snow showers with isolated thunderstorms. Rain showers. Snow accumulation up to 4 inches. Windy with highs in the mid 40s. North winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation 90 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the lower 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming west around 10 mph after midnight. .FRIDAY...Mostly sunny. Highs in the upper 50s. West winds around 10 mph, becoming northeast with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. South winds around 10 mph, becoming southwest after midnight. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows in the upper 40s. .SUNDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 70s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Breezy with highs in the upper 70s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 70s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows in the upper 40s. Chance of rain 40 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Breezy with highs in the lower 70s. Chance of rain 40 percent. $$ WYZ004-211000- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy with isolated thunderstorms. Scattered showers late this evening, then showers after midnight. Breezy with lows around 40. Northwest winds 15 to 25 mph. Gusts up to 40 mph after midnight. Chance of rain 80 percent. .THURSDAY...Isolated thunderstorms. Rain and snow showers in the morning, then rain showers in the afternoon. No snow accumulation. Windy, cooler with highs around 50. North winds 20 to 30 mph with gusts up to 45 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy and breezy. Lows in the mid 30s. Northwest winds 15 to 20 mph with gusts up to 35 mph, diminishing to around 10 mph after midnight. .FRIDAY...Mostly sunny. Highs in the mid 60s. North winds around 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows around 40. East winds around 10 mph, becoming southeast after midnight. .SATURDAY...Mostly sunny. Highs in the mid 70s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs around 80. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 50. .MEMORIAL DAY...Mostly sunny. Highs in the mid 80s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs in the lower 80s. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows around 50. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ WYZ006-211000- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Scattered showers after midnight. Lows around 40. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .THURSDAY...Rain showers with isolated thunderstorms. Breezy with highs in the upper 40s. Northwest winds 15 to 25 mph with gusts up to 40 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers likely in the evening, then partly cloudy after midnight. Breezy with lows in the mid 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming southwest around 10 mph after midnight. Chance of rain 60 percent. .FRIDAY...Partly cloudy in the morning, then clearing. Highs in the lower 60s. North winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. East winds around 10 mph, becoming southeast after midnight. .SATURDAY...Mostly sunny. Highs in the lower 70s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs around 80. .SUNDAY NIGHT...Mostly clear. Lows around 50. .MEMORIAL DAY...Sunny. Highs in the mid 80s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 50s. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs around 80. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows around 50. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ WYZ005-211000- Southwest Bighorn Basin- Including the city of Thermopolis 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Scattered showers after midnight. Lows in the mid 30s. Northwest winds around 10 mph. Chance of rain 30 percent. .THURSDAY...Rain showers. Snow showers in the morning, then isolated thunderstorms in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the mid 40s. North winds 20 to 30 mph with gusts up to 45 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Breezy with lows in the lower 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming west around 10 mph after midnight. Chance of rain 30 percent. .FRIDAY...Mostly sunny. Highs around 60. North winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. East winds around 10 mph in the evening. .SATURDAY...Mostly sunny. Highs in the lower 70s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. .SUNDAY...Mostly sunny. A slight chance of. Highs in the upper 70s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 50. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the lower 80s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 50. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs in the upper 70s. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ WYZ023-211000- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 917 PM MDT Wed May 20 2026 .TONIGHT...Cloudy. Numerous rain showers with isolated thunderstorms after midnight. Lows in the lower 30s. Chance of rain 60 percent. .THURSDAY...Rain showers. Snow showers with isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 50s. North winds around 10 mph in the afternoon. Chance of precipitation 90 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. North winds around 10 mph with gusts up to 20 mph in the evening. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY...Mostly sunny. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows around 40. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 40. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs around 80. .MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. .TUESDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A slight chance of rain showers and thunderstorms in the evening. Lows in the upper 30s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. $$ WYZ025-211000- Upper Green River Basin Foothills- Including the city of Pinedale 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Numerous rain showers, snow showers with isolated thunderstorms after midnight. Little or no snow accumulation. Lows around 30. Chance of precipitation 60 percent. .THURSDAY...Snow and rain showers. Isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. Snow accumulation up to 1 inch. Highs around 50. Southwest winds around 10 mph, becoming north in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Lows in the mid 20s. North winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .FRIDAY...Partly cloudy. Highs in the mid 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny. Highs in the mid 60s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the mid 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the mid 60s. Chance of rain 30 percent. $$ WYZ026-211000- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Scattered rain and snow showers after midnight. Lows in the lower 30s. West winds around 10 mph late this evening. Chance of precipitation 30 percent. .THURSDAY...Rain showers. Snow showers with isolated thunderstorms in the morning, then scattered thunderstorms and numerous snow showers in the afternoon. Little or no snow accumulation. Highs in the lower 50s. Southwest winds 10 to 15 mph, becoming northwest in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers likely with possible snow showers and thunderstorms in the evening, then partly cloudy after midnight. Little or no snow accumulation. Lows in the mid 20s. Northeast winds 10 to 15 mph in the evening. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. Highs in the mid 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny. Highs in the upper 60s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 30s. .SUNDAY...Mostly sunny. A slight chance of. Highs in the lower 70s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs around 70. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the mid 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. Breezy with highs in the upper 60s. $$ WYZ010-211000- Northeast Johnson County- Including the city of Buffalo 917 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows in the upper 30s. Northwest winds 10 to 15 mph. .THURSDAY...Cloudy with isolated thunderstorms. Rain showers. Breezy, cooler with highs around 50. North winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Cloudy. Rain showers likely, mainly in the evening. Breezy with lows in the mid 30s. Northwest winds 15 to 20 mph with gusts up to 35 mph, diminishing to around 10 mph with gusts up to 20 mph after midnight. Chance of rain 60 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs around 60. North winds around 10 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. Northwest winds around 10 mph in the evening. .SATURDAY...Mostly sunny. Highs in the lower 70s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. .SUNDAY...Mostly sunny. Highs around 80. .SUNDAY NIGHT...Mostly clear. Lows in the upper 40s. .MEMORIAL DAY...Sunny. Highs in the mid 80s. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Breezy with highs in the lower 80s. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows around 50. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 70s. Chance of rain 30 percent. $$ WYZ011-211000- Southeast Johnson County- Including the city of Kaycee 917 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows in the upper 30s. Northwest winds around 10 mph. .THURSDAY...Cloudy. Scattered showers in the morning, then showers with isolated thunderstorms in the afternoon. Breezy with highs around 50. North winds 10 to 15 mph with gusts up to 25 mph, increasing to 20 to 25 mph with gusts up to 35 mph in the afternoon. Chance of rain 80 percent. .THURSDAY NIGHT...Cloudy. Rain showers likely with a slight chance of thunderstorms in the evening, then a chance of rain showers after midnight. Breezy with lows in the mid 30s. North winds 15 to 20 mph with gusts up to 35 mph, becoming northwest around 10 mph with gusts up to 20 mph after midnight. Chance of rain 60 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Highs around 60. Northwest winds around 10 mph in the morning. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. Southwest winds around 10 mph after midnight. .SATURDAY...Mostly sunny. Highs in the lower 70s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs around 80. .SUNDAY NIGHT...Mostly clear. Lows in the upper 40s. .MEMORIAL DAY...Sunny. Highs in the mid 80s. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the lower 80s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ WYZ027-211000- South Lincoln County- Including the cities of Kemmerer and Cokeville 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Scattered rain and snow showers after midnight. Lows in the lower 30s. West winds around 10 mph after midnight. Chance of precipitation 30 percent. .THURSDAY...Rain showers with possible snow showers and thunderstorms in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. No snow accumulation. Breezy with highs in the lower 50s. West winds 15 to 20 mph, becoming northwest in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Breezy with lows in the upper 20s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming southeast around 10 mph after midnight. Chance of rain 30 percent. .FRIDAY...Partly cloudy. Highs around 60. West winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 30. .SATURDAY...Mostly sunny and breezy. Highs around 70. .SATURDAY NIGHT...Mostly clear. Lows in the mid 30s. .SUNDAY...Mostly sunny. Highs in the lower 70s. .SUNDAY NIGHT...Mostly clear. Lows around 40. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Breezy with highs around 70. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .WEDNESDAY...Mostly sunny. A slight chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the mid 60s. Chance of rain 20 percent. $$ WYZ016-211000- Upper Wind River Basin- Including the city of Dubois 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Numerous snow showers with possible rain showers and thunderstorms after midnight. Little or no snow accumulation. Lows in the mid 30s. West winds around 10 mph late this evening. Chance of precipitation 60 percent. .THURSDAY...Rain and snow showers. Isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon. Snow accumulation up to 2 inches. Highs in the mid 40s. Northeast winds 10 to 15 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Lows in the upper 20s. Southeast winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 30 percent. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 50s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. Southwest winds around 10 mph with gusts up to 20 mph, becoming west after midnight. .SATURDAY...Mostly sunny and breezy. Highs in the mid 60s. .SATURDAY NIGHT...Mostly clear. Lows around 40. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Breezy with highs around 70. Chance of rain 30 percent. .SUNDAY NIGHT...Mostly clear. Lows in the lower 40s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the lower 70s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. .TUESDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. $$ WYZ001-211000- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 917 PM MDT Wed May 20 2026 .TONIGHT...Snow showers with isolated thunderstorms. Rain showers. Snow accumulation up to 4 inches. Lows in the upper 20s. Chance of precipitation 90 percent. .THURSDAY...Cloudy with numerous snow showers with isolated thunderstorms in the morning, then partly cloudy with scattered thunderstorms and snow showers in the afternoon. Storm total snow accumulation of 1 to 3 inches. Highs in the lower 40s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 60 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 20s. North winds around 10 mph with gusts up to 25 mph in the evening. .FRIDAY...Partly cloudy. Highs in the lower 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 20s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. .SATURDAY...Mostly sunny. Highs in the upper 50s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SUNDAY...Mostly sunny in the morning, then becoming partly cloudy. A slight chance of. Highs in the mid 60s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Breezy with highs in the mid 60s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. $$ WYZ029-211000- Flaming Gorge- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the upper 30s. Southwest winds around 10 mph late this evening. .THURSDAY...Numerous rain showers with possible snow showers and thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. No snow accumulation. Breezy with highs in the lower 50s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers, snow showers likely with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Little or no snow accumulation. Breezy with lows in the lower 30s. North winds 15 to 20 mph with gusts up to 30 mph, becoming east around 10 mph after midnight. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. Highs in the mid 50s. West winds around 10 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. Southwest winds around 10 mph in the evening. .SATURDAY...Mostly sunny. Highs in the upper 60s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .MEMORIAL DAY...Mostly sunny. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 40s. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy and breezy. Lows in the mid 40s. .WEDNESDAY...Mostly sunny. A slight chance of. Breezy with highs in the upper 60s. $$ WYZ022-211000- Casper Mountain- 917 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows in the lower 30s. South winds around 10 mph. .THURSDAY...Mostly cloudy. Numerous rain showers, scattered thunderstorms and numerous snow showers in the afternoon. No snow accumulation. Highs in the upper 40s. Southwest winds around 10 mph, becoming west in the afternoon. Chance of precipitation 70 percent. .THURSDAY NIGHT...Snow showers. Rain showers with a slight chance of thunderstorms in the evening, then rain showers likely after midnight. Snow accumulation up to 4 inches. Lows in the upper 20s. Northwest winds around 10 mph. Chance of precipitation 80 percent. .FRIDAY...Mostly cloudy with a chance of snow and rain showers in the morning, then partly cloudy in the afternoon. Highs in the upper 40s. West winds around 10 mph. Chance of precipitation 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 30s. Southwest winds around 10 mph. .SATURDAY...Mostly sunny. Highs in the upper 50s. .SATURDAY NIGHT...Mostly clear. Lows around 40. .SUNDAY...Mostly sunny. Highs in the upper 60s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .MEMORIAL DAY...Mostly sunny. Highs in the lower 70s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. .TUESDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. $$ WYZ002-211000- Absaroka Mountains- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Snow showers and scattered rain showers late this evening, then snow showers with isolated thunderstorms after midnight. Snow accumulation around 5 inches. Lows in the upper 20s. West winds around 10 mph late this evening. Chance of precipitation 90 percent. .THURSDAY...Snow showers with isolated thunderstorms in the morning, then snow showers and scattered thunderstorms in the afternoon. Storm total snow accumulation of 3 to 5 inches. Breezy with highs in the mid 30s. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of snow 80 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows 14 to 24. North winds 10 to 15 mph with gusts up to 30 mph, becoming west after midnight. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 40s. West winds around 10 mph with gusts up to 20 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY...Mostly sunny and breezy. Highs in the lower 50s. .SATURDAY NIGHT...Mostly clear and breezy. Lows in the mid 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 30 percent. .SUNDAY NIGHT...Mostly clear. Lows in the upper 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Breezy with highs in the lower 60s. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain and snow showers after midnight. Lows in the upper 30s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of rain and snow showers. A chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 40 percent. $$ WYZ007-211000- Owl Creek and Bridger Mountains- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Scattered rain showers after midnight. Lows in the mid 30s. West winds around 10 mph, becoming northeast after midnight. Chance of rain 30 percent. .THURSDAY...Rain showers, snow showers with isolated thunderstorms. Snow accumulation up to 4 inches. Windy with highs in the lower 40s. North winds 20 to 30 mph with gusts up to 40 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy with snow showers likely with a chance of rain showers in the evening, then partly cloudy after midnight. Snow accumulation up to 2 inches. Breezy with lows in the lower 30s. North winds 20 to 25 mph with gusts up to 35 mph, becoming northwest around 10 mph after midnight. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. Highs in the mid 50s. Northwest winds around 10 mph, becoming north in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. Southeast winds around 10 mph, becoming southwest after midnight. .SATURDAY...Mostly sunny. Highs in the mid 60s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. .SUNDAY...Mostly sunny. A slight chance of. Highs in the lower 70s. .SUNDAY NIGHT...Mostly clear. Lows around 50. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows around 50. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the lower 70s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Breezy with lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 40 percent. $$ WYZ008-211000- Bighorn Mountains West- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy with isolated thunderstorms. Scattered snow showers after midnight. Lows in the lower 30s. East winds around 10 mph, becoming southeast after midnight. Chance of snow 40 percent. .THURSDAY...Snow showers with isolated thunderstorms. Rain showers. Snow accumulation up to 7 inches. Highs in the lower 40s. South winds around 10 mph, becoming northwest in the afternoon. Chance of precipitation 90 percent. .THURSDAY NIGHT...Cloudy. Snow and rain showers likely in the evening. New snow accumulation up to 3 inches. Lows in the upper 20s. North winds 10 to 15 mph with gusts up to 25 mph in the evening. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. A slight chance of. Highs in the upper 40s. West winds around 10 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. Southwest winds around 10 mph with gusts up to 20 mph, becoming southeast after midnight. .SATURDAY...Mostly sunny. Highs in the upper 50s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny. Highs in the upper 60s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. .MEMORIAL DAY...Mostly sunny and breezy. Highs around 70. .MONDAY NIGHT...Partly cloudy and breezy. Lows in the upper 40s. .TUESDAY...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Breezy with lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a chance of rain showers. A chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. $$ WYZ009-211000- Bighorn Mountains Southeast- 917 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows in the lower 30s. West winds around 10 mph. .THURSDAY...Snow showers with isolated thunderstorms. Rain showers. Snow accumulation up to 6 inches. Highs in the lower 40s. East winds around 10 mph, becoming north in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Cloudy. Snow and rain showers likely in the evening, then a chance of snow showers after midnight. Storm total snow accumulation around an inch possible. Lows in the upper 20s. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of precipitation 70 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of. Highs in the upper 40s. Northwest winds around 10 mph with gusts up to 20 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. West winds around 10 mph with gusts up to 20 mph. .SATURDAY...Mostly sunny. A slight chance of. Highs in the upper 50s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 40s. .SUNDAY...Mostly sunny and breezy. Highs in the upper 60s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MEMORIAL DAY...Mostly sunny and breezy. Highs in the lower 70s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Breezy with lows in the upper 40s. .TUESDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Breezy with lows in the mid 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A chance of rain showers in the morning, then rain showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 60 percent. $$ WYZ012-211000- Teton and Gros Ventre Mountains- 917 PM MDT Wed May 20 2026 .TONIGHT...Cloudy with isolated thunderstorms. Scattered rain and snow showers late this evening, then snow and rain showers after midnight. Snow accumulation up to 3 inches. Lows in the upper 20s. Southwest winds around 10 mph. Chance of precipitation 80 percent. .THURSDAY...Snow showers. Isolated thunderstorms in the morning, then scattered thunderstorms and rain showers in the afternoon. Storm total snow accumulation of 1 to 3 inches. Highs around 40. North winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 20s. Northeast winds 10 to 15 mph. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 40s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. Southwest winds around 10 mph with gusts up to 20 mph, becoming southeast after midnight. .SATURDAY...Mostly sunny. Highs in the mid 50s. .SATURDAY NIGHT...Mostly clear. Lows in the mid 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .MEMORIAL DAY...Mostly sunny in the morning, then partly cloudy with a slight chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the mid 30s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain and snow showers in the morning, then a chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 40 percent. $$ WYZ014-211000- Wind River Mountains West- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Numerous snow showers with isolated thunderstorms after midnight. Snow accumulation up to 1 inch. Lows in the upper 20s. Southwest winds around 10 mph. Chance of snow 60 percent. .THURSDAY...Snow showers. Isolated thunderstorms in the morning, then scattered thunderstorms and rain showers in the afternoon. Snow accumulation up to 6 inches. Highs in the upper 30s. Southwest winds around 10 mph, becoming north with gusts up to 25 mph in the afternoon. Chance of precipitation 90 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Lows in the lower 20s. Northeast winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of snow 30 percent. .FRIDAY...Partly cloudy. A slight chance of. Highs in the mid 40s. West winds around 10 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. West winds around 10 mph with gusts up to 20 mph in the evening. .SATURDAY...Mostly sunny and breezy. Highs in the mid 50s. .SATURDAY NIGHT...Mostly clear. Lows in the lower 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. Lows in the upper 30s. .TUESDAY...Partly cloudy. A chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain and snow showers after midnight. Lows in the mid 30s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain and snow showers in the morning, then a chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 30 percent. $$ WYZ015-211000- Wind River Mountains East- 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Numerous snow showers with isolated thunderstorms after midnight. Snow accumulation up to 1 inch. Lows in the upper 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 60 percent. .THURSDAY...Snow showers with isolated thunderstorms in the morning, then snow showers and scattered thunderstorms in the afternoon. Snow may be heavy at times in the afternoon. Storm total snow accumulation of 3 to 5 inches. Highs in the mid 30s. West winds 10 to 15 mph, becoming northeast in the afternoon. Chance of snow 90 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Cold with lows 13 to 25. North winds 10 to 15 mph with gusts up to 30 mph, becoming west after midnight. Chance of snow 30 percent. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. A chance of. Highs in the lower 40s. West winds around 10 mph. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 20s. Southwest winds 10 to 15 mph. .SATURDAY...Mostly sunny and breezy. Highs in the lower 50s. .SATURDAY NIGHT...Mostly clear and breezy. Lows in the mid 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 40 percent. .SUNDAY NIGHT...Mostly clear. Lows in the upper 30s. .MEMORIAL DAY...Mostly sunny. A slight chance of. Breezy with highs around 60. .MONDAY NIGHT...Partly cloudy. Lows around 40. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers, thunderstorms and snow showers in the afternoon. Breezy with highs in the upper 50s. Chance of precipitation 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening, then a slight chance of rain and snow showers after midnight. Lows in the upper 30s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of rain and snow showers in the morning, then a chance of rain showers, thunderstorms and snow showers in the afternoon. Breezy with highs in the mid 50s. Chance of precipitation 30 percent. $$ WYZ019-211000- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the lower 30s. Southwest winds around 10 mph. .THURSDAY...Cloudy. Numerous rain showers, snow showers with isolated thunderstorms in the morning, then rain showers, snow showers and scattered thunderstorms in the afternoon. Snow accumulation up to 1 inch. Breezy with highs in the mid 40s. Southwest winds around 10 mph, becoming northwest 15 to 20 mph in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy. Snow and rain showers in the evening, then snow showers likely with a chance of rain showers after midnight. Snow accumulation up to 2 inches. Lows in the upper 20s. North winds 10 to 15 mph. Gusts up to 35 mph in the evening. Chance of precipitation 80 percent. .FRIDAY...Partly cloudy. Highs in the lower 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SATURDAY...Mostly sunny. Highs in the lower 60s. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. .SUNDAY...Mostly sunny. Highs in the lower 70s. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .MEMORIAL DAY...Mostly sunny. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 40s. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the lower 70s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 40s. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 20 percent. $$ WYZ024-211000- Salt River and Wyoming Ranges- 917 PM MDT Wed May 20 2026 .TONIGHT...Cloudy. Numerous snow showers with possible rain showers and thunderstorms after midnight. Snow accumulation up to 1 inch. Lows in the lower 30s. Southwest winds around 10 mph with gusts up to 20 mph. Chance of precipitation 60 percent. .THURSDAY...Snow showers. Numerous rain showers with isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. Snow accumulation up to 2 inches. Highs in the mid 40s. West winds 10 to 15 mph, becoming northwest in the afternoon. Chance of precipitation 80 percent. .THURSDAY NIGHT...Partly cloudy with a chance of snow showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 20s. North winds 10 to 15 mph with gusts up to 30 mph in the evening. Chance of snow 30 percent. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 50s. West winds around 10 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. West winds around 10 mph with gusts up to 20 mph in the evening. .SATURDAY...Mostly sunny and breezy. Highs around 60. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. .SUNDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 20 percent. .SUNDAY NIGHT...Mostly clear. Lows around 40. .MEMORIAL DAY...Mostly sunny. A slight chance of. Highs in the upper 60s. .MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. .TUESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the lower 60s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the upper 30s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain showers and thunderstorms in the afternoon. Breezy with highs in the upper 50s. Chance of rain 30 percent. $$ WYZ030-211000- East Sweetwater County- Including the city of Wamsutter 917 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. Lows in the lower 30s. Southwest winds around 10 mph. .THURSDAY...Cloudy. Numerous rain showers and scattered snow showers in the morning, then rain showers and scattered thunderstorms in the afternoon. No snow accumulation. Highs around 50. West winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy. Rain showers, snow showers likely with a slight chance of thunderstorms in the evening. Snow accumulation up to 1 inch. Lows around 30. North winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of precipitation 60 percent. .FRIDAY...Partly cloudy. Highs in the lower 50s. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY...Mostly sunny. Highs in the mid 60s. .SATURDAY NIGHT...Mostly clear. Lows around 40. .SUNDAY...Mostly sunny. Highs around 70. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .MEMORIAL DAY...Mostly sunny. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. Lows in the lower 40s. .TUESDAY...Partly cloudy. A slight chance of. Breezy with highs around 70. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Breezy with lows around 40. Chance of rain 20 percent. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of. Breezy with highs around 70. $$