FPUS55 KTFX 210632 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 1232 AM MDT Thu May 21 2026 Spot temperatures and probabilities of measurable precipitation are for .TONIGHT THROUGH TODAY..., Friday, Friday night, and Saturday. MTZ301-221000- East Glacier Park Region- Including the cities of East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, and Logan Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain and snow. Patchy fog early in the morning. Highs 46 to 56. Lows 27 to 38. Southwest winds up to 10 mph with gusts to around 25 mph. .FRIDAY...Not as cool. Mostly sunny. Highs 50 to 62. West winds 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 36 to 42. Southwest winds 5 to 10 mph. .SATURDAY...Warmer, sunny. Highs 55 to 67. Southwest winds 5 to 20 mph. Gusts up to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 42 to 48. Southwest winds 10 to 15 mph. Gusts up to 40 mph decreasing to 30 mph after midnight. .SUNDAY...Windy, sunny. Highs 55 to 67. .SUNDAY NIGHT...Breezy. Partly cloudy in the evening, then mostly cloudy with a 20 percent chance of rain after midnight. Lows 40 to 46. .MEMORIAL DAY...Breezy. Mostly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs 53 to 65. Chance of rain 40 percent. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then chance of rain and snow after midnight. Lows 39 to 45. Chance of precipitation 50 percent. .TUESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 49 to 59. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows 37 to 43. Chance of rain 60 percent. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 48 to 58. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A 40 percent chance of rain. Lows 38 to 44. Highs 53 to 63. $$ MTZ307-221000- Southern Rocky Mountain Front- Including the city of Rogers Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Slight chance of rain after midnight. Patchy fog early in the morning. Slight chance of snow showers early in the afternoon. Chance of snow and slight chance of rain showers. Highs 43 to 53. Lows 26 to 34. West winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 50 percent. .FRIDAY...Not as cool. Mostly sunny. Highs 49 to 61. West winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 33 to 39. West winds up to 10 mph. .SATURDAY...Warmer, sunny. Highs 54 to 68. Southwest winds up to 15 mph. Gusts up to 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 38 to 44. West winds 5 to 15 mph. Gusts up to 35 mph decreasing to 25 mph after midnight. .SUNDAY...Sunny. Highs 55 to 69. .SUNDAY NIGHT...Partly cloudy. Lows 38 to 44. .MEMORIAL DAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 58 to 70. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows 39 to 45. .TUESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 52 to 62. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows 37 to 43. Chance of precipitation 60 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs 49 to 59. Lows 37 to 43. Chance of precipitation 50 percent. .THURSDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 54 to 64. Chance of precipitation 40 percent. $$ MTZ302-221000- Northern High Plains- Including the cities of Browning, Heart Butte, and Dupuyer 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. A 20 percent chance of rain. Patchy fog early in the morning. Highs in the upper 50s. Lows 32 to 38. Southwest winds up to 15 mph with gusts to around 30 mph. .FRIDAY...Mostly sunny. Highs in the mid 60s. West winds up to 10 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the lower 40s. West winds 5 to 10 mph. .SATURDAY...Sunny. Highs in the lower 70s. West winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the evening. .SUNDAY THROUGH MEMORIAL DAY...Breezy. Partly cloudy. Highs 68 to 74. Lows in the mid 40s. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .TUESDAY THROUGH WEDNESDAY...Breezy. Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Highs in the lower 60s. Lows in the lower 40s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A 40 percent chance of rain. Lows in the lower 40s. Highs in the upper 60s. $$ MTZ308-221000- Southern High Plains- Including the cities of Bynum, Choteau, and Pendroy 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Chance of rain and slight chance of snow. Patchy fog early in the morning. Highs in the upper 50s. Lows in the mid 30s. Southwest winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 50 percent. .FRIDAY...Mostly sunny. Highs in the upper 60s. Southwest winds up to 5 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the lower 40s. West winds up to 10 mph. .SATURDAY...Sunny. Highs in the mid 70s. Southwest winds up to 10 mph. Gusts up to 25 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. West winds 5 to 10 mph. Gusts up to 30 mph in the evening. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the upper 40s. .TUESDAY...Cooler. Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the mid 40s. Chance of precipitation 60 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the mid 60s. Lows in the mid 40s. Chance of precipitation 50 percent. .THURSDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs around 70. Chance of precipitation 40 percent. $$ MTZ303-221000- Eastern Glacier, Western Toole, and Central Pondera- Including the cities of Cut Bank, Ethridge, and Santa Rita 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain. Patchy fog early in the morning. Highs around 60. Lows in the mid 30s. Southwest winds up to 20 mph. .FRIDAY...Partly sunny. Highs in the upper 60s. Southwest winds up to 5 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the lower 40s. Southwest winds up to 10 mph. .SATURDAY...Sunny. Highs in the mid 70s. Southwest winds up to 15 mph. Gusts up to 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the evening. .SUNDAY AND SUNDAY NIGHT...Breezy. Partly cloudy. Highs in the mid 70s. Lows in the upper 40s. .MEMORIAL DAY...Partly sunny. Highs in the mid 70s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the mid 40s. .TUESDAY...Breezy. Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Windy. Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s. .WEDNESDAY...Breezy. Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A 40 percent chance of rain. Lows in the mid 40s. Highs around 70. && TEMPERATURE / PRECIPITATION Cut Bank 34 68 39 75 / 20 0 0 0 $$ MTZ304-221000- Eastern Toole and Liberty- Including the cities of Devon, Shelby, Chester, Galata, Joplin, Lothair, and Whitlash 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain showers. Patchy fog early in the morning. Highs around 60. Lows in the mid 30s. South winds up to 15 mph with gusts to around 30 mph. .FRIDAY...Mostly sunny. Highs in the upper 60s. South winds up to 5 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. South winds up to 10 mph. .SATURDAY...Sunny. Highs in the upper 70s. Southwest winds up to 10 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds 5 to 15 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs 76 to 83. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the upper 40s. .TUESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 70 to 76. Chance of precipitation 30 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 66 to 72. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the mid 40s. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 20 percent. $$ MTZ305-221000- Hill County- Including the city of Havre 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain showers. Patchy fog early in the morning. Highs in the lower 60s. Lows in the mid 30s. Southwest winds up to 15 mph. .FRIDAY...Mostly sunny. Highs around 70. South winds up to 5 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. South winds up to 10 mph. .SATURDAY...Sunny. Highs in the upper 70s. Southwest winds up to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 80s. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 80s. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the lower 50s. Chance of rain 30 percent. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 70s. .TUESDAY NIGHT...Breezy. Mostly cloudy with a 50 percent chance of rain. Lows in the upper 40s. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the upper 40s. Chance of rain 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of precipitation 20 percent. && TEMPERATURE / PRECIPITATION Havre 34 72 41 80 / 20 0 0 0 $$ MTZ306-221000- Northern Blaine County- Including the cities of Chinook, Zurich, Harlem, Hogeland, and Fort Belknap 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain showers. Patchy fog early in the morning. Highs around 60. Lows in the mid 30s. Northwest winds up to 15 mph. .FRIDAY...Sunny. Highs in the upper 60s. Northwest winds up to 5 mph shifting to the southwest in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. Southeast winds up to 10 mph. .SATURDAY...Sunny. Highs in the upper 70s. South winds up to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. South winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 80s. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 80s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of rain in the evening, then mostly cloudy after midnight. Lows in the lower 50s. .TUESDAY...Breezy. Mostly sunny. Highs in the lower 80s. .TUESDAY NIGHT...Breezy. Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the lower 50s. Chance of rain 50 percent. .WEDNESDAY...Breezy. Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the upper 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 70s. $$ MTZ309-221000- Eastern Pondera and Eastern Teton- Including the cities of Brady, Conrad, and Ledger 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. A 20 percent chance of rain. Patchy fog early in the morning. Highs around 60. Lows in the mid 30s. Southwest winds up to 15 mph. .FRIDAY...Mostly sunny. Highs around 70. Southwest winds up to 5 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows around 40. Southwest winds up to 5 mph. .SATURDAY...Sunny. Highs in the upper 70s. Southwest winds up to 10 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds 5 to 10 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the lower 80s. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the upper 40s. Chance of rain 30 percent. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs in the upper 60s. Lows in the mid 40s. Chance of precipitation 40 percent. .THURSDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. $$ MTZ310-221000- Western and Central Chouteau County- Including the cities of Floweree, Carter, and Fort Benton 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. A 20 percent chance of rain. Patchy fog early in the morning. Highs around 60. Lows in the upper 30s. Southwest winds up to 15 mph. .FRIDAY...Mostly sunny. Highs around 70. Southwest winds up to 5 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. South winds up to 10 mph. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the upper 70s. Lows in the upper 40s. Southwest winds up to 10 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the lower 80s. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the lower 50s. Chance of rain 40 percent. .TUESDAY...Mostly sunny. Slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 20 percent. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the upper 40s. Highs in the lower 70s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with chance of rain after midnight. Lows in the upper 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 20 percent. $$ MTZ311-221000- Bears Paw Mountains and Southern Blaine- Including the city of Rocky Boy 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of rain showers. Patchy fog early in the morning. Highs 55 to 61. Lows in the upper 30s. West winds up to 15 mph. .FRIDAY...Warmer. Mostly sunny. Highs 64 to 70. Northwest winds up to 5 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southeast winds up to 10 mph. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 72 to 78. Lows in the lower 50s. South winds up to 10 mph. .SUNDAY...Sunny. Highs 77 to 83. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain after midnight. Lows in the lower 50s. .MEMORIAL DAY...Mostly sunny. Highs 80 to 86. .MONDAY NIGHT...Mostly cloudy. A 20 percent chance of rain in the evening. Lows in the mid 50s. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 75 to 81. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the lower 50s. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 70 to 76. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows around 50. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 73 to 79. $$ MTZ312-221000- Cascade County below 5000ft- Including the city of Great Falls 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. A 50 percent chance of rain. Patchy fog early in the morning. Slight chance of rain showers early in the afternoon. Highs in the upper 50s. Lows in the upper 30s. Southwest winds up to 15 mph. .FRIDAY...Mostly sunny. Highs in the upper 60s. Southwest winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. South winds up to 10 mph. .SATURDAY...Warmer, sunny. Highs 73 to 79. Southwest winds up to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows around 50. Southwest winds 5 to 10 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs around 80. Lows in the lower 50s. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the lower 50s. Chance of rain 30 percent. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the upper 40s. Chance of precipitation 60 percent. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the upper 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 30 percent. && TEMPERATURE / PRECIPITATION Great Falls Arpt 36 69 42 77 / 50 0 0 0 $$ MTZ313-221000- Judith Basin County and Judith Gap- Including the cities of Raynesford, Geyser, Stanford, Windham, Benchland, Hobson, and Moccasin 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Chance of rain and slight chance of thunderstorms. Patchy fog early in the morning. Slight chance of rain showers in the late morning and early afternoon. Highs in the mid 50s. Lows in the mid 30s. West winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .FRIDAY...Mostly sunny. Highs in the mid 60s. West winds up to 5 mph shifting to the north in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. East winds up to 5 mph shifting to the southwest after midnight. .SATURDAY...Sunny. Highs in the lower 70s. Southwest winds up to 10 mph shifting to the west with gusts to around 25 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows in the upper 40s. Southwest winds up to 15 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of rain. Lows around 50. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 20 percent. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the upper 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. A 40 percent chance of thunderstorms in the afternoon. Highs in the lower 70s. $$ MTZ314-221000- Fergus County below 4500ft- Including the cities of Hilger and Lewistown 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Slight chance of rain after midnight. Patchy fog early in the morning. A 20 percent chance of rain showers. Highs 55 to 61. Lows 35 to 40. West winds up to 15 mph with gusts to around 30 mph. .FRIDAY...Mostly sunny. Highs in the upper 60s. West winds up to 5 mph shifting to the north in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. East winds up to 5 mph shifting to the south after midnight. .SATURDAY...Warmer, sunny. Highs 73 to 79. Southwest winds up to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the upper 40s. Southwest winds up to 10 mph. .SUNDAY...Sunny. Highs 78 to 84. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MEMORIAL DAY...Sunny. Highs 81 to 87. .MONDAY NIGHT...Mostly cloudy with a 20 percent chance of rain in the evening, then partly cloudy after midnight. Lows in the lower 50s. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 75 to 81. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 48 to 54. Highs 70 to 76. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain after midnight. Lows 46 to 52. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 73 to 79. && TEMPERATURE / PRECIPITATION Lewistown 33 64 39 73 / 40 0 0 0 $$ MTZ315-221000- Upper Blackfoot and MacDonald Pass- Including the cities of Marysville, Lincoln, Flesher Pass, and MacDonald Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Snow and rain likely. Patchy fog early in the morning. Snow accumulation up to 3 inches. Total snow accumulation up to 4 inches. Highs 46 to 56. Lows in the lower 30s. Southwest winds up to 10 mph. Chance of precipitation 70 percent. .FRIDAY...Not as cool. Mostly sunny. Highs 54 to 64. West winds up to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows in the upper 30s. Northwest winds up to 5 mph with gusts to around 20 mph shifting to the southwest after midnight. .SATURDAY...Warmer, sunny. Highs 61 to 71. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. West winds up to 10 mph. Gusts up to 30 mph in the evening. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs 63 to 74. Lows in the mid 40s. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain. Lows in the mid 40s. .TUESDAY...Partly sunny. Chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs 57 to 65. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s. .WEDNESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 54 to 62. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with chance of rain after midnight. Lows in the lower 40s. Chance of precipitation 40 percent. .THURSDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 68. Chance of precipitation 30 percent. $$ MTZ316-221000- Gates of the Mountains- Including the cities of Canyon Creek, Wolf Creek, and Craig 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Rain likely and slight chance of snow. Patchy fog early in the morning. Snow accumulation up to 1 inch. Highs 51 to 59. Lows in the mid 30s. Southwest winds up to 10 mph. Chance of precipitation 70 percent. .FRIDAY...Warmer. Mostly sunny. Highs 61 to 69. South winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. Northwest winds up to 5 mph shifting to the southwest after midnight. .SATURDAY...Warmer, sunny. Highs 68 to 76. Southwest winds up to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Southwest winds up to 10 mph with gusts to around 25 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs 71 to 80. Lows in the upper 40s. .MONDAY NIGHT...Mostly cloudy with a 30 percent chance of rain. Lows in the upper 40s. .TUESDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 64 to 70. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the mid 40s. Chance of rain 60 percent. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 59 to 67. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the mid 40s. Chance of precipitation 40 percent. .THURSDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 66 to 72. Chance of precipitation 30 percent. $$ MTZ317-221000- Little Belt and Highwood Mountains- Including the cities of Monarch, Neihart, and Kings Hill Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Patchy fog. Snow, rain likely and slight chance of thunderstorms. Chance of snow showers in the afternoon. Snow accumulation up to 4 inches. Snow level 6400 feet. Highs 43 to 51. Lows 29 to 36. Southwest winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .FRIDAY...Not as cool. Mostly sunny. Highs 54 to 62. West winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 35 to 43. West winds up to 10 mph shifting to the south after midnight. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 61 to 69. Lows 41 to 49. Southwest winds up to 15 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs 66 to 75. Lows 43 to 51. .MONDAY NIGHT...Partly cloudy. Chance of rain and slight chance of thunderstorms in the evening, then slight chance of rain after midnight. Lows 45 to 51. Chance of precipitation 30 percent. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs 62 to 68. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows 42 to 48. Chance of precipitation 60 percent. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Highs 58 to 64. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows 41 to 47. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs 62 to 68. Chance of precipitation 40 percent. $$ MTZ318-221000- Snowy and Judith Mountains- 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. A 50 percent chance of rain and snow showers. Highs 44 to 52. Lows 31 to 36. West winds up to 15 mph with gusts to around 30 mph. .FRIDAY...Not as cool. Mostly sunny. Highs 55 to 63. Northwest winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Northeast winds up to 5 mph shifting to the south after midnight. .SATURDAY...Warmer, sunny. Highs 63 to 71. Southwest winds up to 10 mph. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southwest winds up to 10 mph with gusts to around 25 mph. .SUNDAY...Sunny. Highs 69 to 77. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the upper 40s. .MEMORIAL DAY...Sunny. Highs 72 to 80. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows around 50. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 67 to 73. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the upper 40s. Highs 62 to 68. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the mid 40s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A 30 percent chance of thunderstorms in the afternoon. Highs 66 to 72. $$ MTZ319-221000- Helena Valley- Including the city of Helena 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Rain likely. Patchy fog early in the morning. Highs around 60. Lows in the mid 30s. South winds up to 10 mph. Chance of rain 70 percent. .FRIDAY...Mostly sunny. Highs in the upper 60s. Southeast winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows around 40. Northeast winds up to 5 mph shifting to the south after midnight. .SATURDAY...Sunny. Highs in the mid 70s. South winds up to 5 mph shifting to the west in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southwest winds up to 10 mph. .SUNDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the lower 80s. Lows in the mid 40s. .MONDAY NIGHT...Mostly cloudy with slight chance of rain in the evening, then partly cloudy with chance of rain after midnight. Lows in the mid 40s. Chance of rain 30 percent. .TUESDAY...Cooler. Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with chance of rain after midnight. Lows in the lower 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 30 percent. && TEMPERATURE / PRECIPITATION Helena 37 68 41 76 / 80 0 0 0 $$ MTZ320-221000- Big Belt, Bridger and Castle Mountains- Including the cities of Trident, Maudlow, Battle Ridge Pass, Bozeman Pass, and Deep Creek Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Rain, snow and slight chance of thunderstorms. Patchy fog early in the morning. Chance of rain showers in the late morning and early afternoon. Chance of snow showers in the late morning and afternoon. Snow accumulation up to 5 inches. Snow level 6500 feet. Highs 43 to 53. Lows 29 to 36. West winds up to 15 mph with gusts to around 35 mph. Chance of precipitation near 100 percent. .FRIDAY...Not as cool. Mostly sunny. Highs 52 to 62. Southwest winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. West winds up to 10 mph shifting to the southeast after midnight. .SATURDAY...Warmer, sunny. Highs 60 to 70. Southwest winds up to 15 mph. Gusts up to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. West winds 5 to 10 mph with gusts to around 30 mph shifting to the south after midnight. .SUNDAY...Mostly sunny. Highs 65 to 75. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the upper 40s. .MEMORIAL DAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 68 to 76. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of rain. Lows in the upper 40s. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 61 to 71. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs 57 to 67. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the mid 40s. Highs 61 to 69. Chance of precipitation 40 percent. $$ MTZ321-221000- Meagher County Valleys- Including the cities of Martinsdale, Checkerboard, Ringling, and White Sulphur Springs 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Rain likely with possible snow and thunderstorms. Patchy fog early in the morning. Slight chance of rain showers late in the morning. Chance of rain showers early in the afternoon. Little or no snow accumulation. Highs in the lower 50s. Lows in the lower 30s. Southwest winds up to 15 mph. Chance of precipitation near 100 percent. .FRIDAY...Mostly sunny. Highs in the lower 60s. West winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. West winds up to 10 mph shifting to the south after midnight. .SATURDAY...Sunny. Highs in the upper 60s. Southwest winds up to 5 mph shifting to the west 5 to 15 mph with gusts to around 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. Southwest winds up to 10 mph. Gusts up to 25 mph in the evening. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs in the mid 70s. Lows in the mid 40s. .MEMORIAL DAY...Sunny. Highs in the mid 70s. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of rain. Lows in the mid 40s. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs around 70. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the mid 40s. Chance of precipitation 50 percent. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the upper 60s. Chance of precipitation 40 percent. $$ MTZ322-221000- Elkhorn and Boulder Mountains- Including the cities of Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Snow and rain. Patchy fog early in the morning. Snow accumulation up to 3 inches. Total snow accumulation up to 4 inches. Snow level 6500 feet. Highs 44 to 54. Lows 29 to 36. West winds up to 15 mph with gusts to around 40 mph. Chance of precipitation near 100 percent. .FRIDAY...Not as cool. Partly sunny. Highs 53 to 63. South winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 35 to 41. North winds up to 5 mph with gusts to around 20 mph shifting to the southwest after midnight. .SATURDAY...Warmer, sunny. Highs 61 to 71. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 41 to 47. West winds up to 10 mph with gusts to around 25 mph. .SUNDAY...Mostly sunny. Highs 65 to 75. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows 42 to 48. .MEMORIAL DAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 66 to 76. .MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows 42 to 48. Chance of precipitation 40 percent. .TUESDAY...Partly sunny. Slight chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 59 to 67. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then chance of rain and snow after midnight. Lows 39 to 45. Chance of precipitation 50 percent. .WEDNESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 56 to 64. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain after midnight. Lows 38 to 44. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs 60 to 68. Chance of precipitation 30 percent. $$ MTZ323-221000- Canyon Ferry Area- Including the cities of Toston, Townsend, and Winston 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Rain. Highs in the mid 50s. Lows 34 to 40. Southeast winds up to 20 mph with gusts to around 35 mph. Chance of rain 90 percent. .FRIDAY...Mostly sunny. Highs in the mid 60s. South winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. East winds up to 5 mph shifting to the south after midnight. .SATURDAY...Sunny. Highs in the lower 70s. South winds up to 10 mph. Gusts up to 25 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Northwest winds up to 10 mph with gusts to around 25 mph shifting to the south after midnight. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MEMORIAL DAY...Sunny. Highs in the upper 70s. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of rain. Lows in the upper 40s. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Chance of precipitation 30 percent. $$ MTZ324-221000- Missouri Headwaters- Including the cities of Harrison, Three Forks, Willow Creek, Pony, and Whitehall 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Mostly cloudy. Rain, slight chance of thunderstorms and snow. Patchy fog early in the morning. Chance of rain showers late in the morning. No snow accumulation. Highs in the mid 50s. Lows in the mid 30s. Southwest winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 90 percent. .FRIDAY...Partly sunny. Highs in the mid 60s. Southwest winds up to 5 mph shifting to the southeast in the afternoon. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows around 40. East winds up to 5 mph with gusts to around 20 mph shifting to the southwest after midnight. .SATURDAY...Sunny. Highs in the mid 70s. Southwest winds up to 5 mph increasing to 5 to 15 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. West winds up to 10 mph. Gusts up to 25 mph in the evening. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MEMORIAL DAY...Sunny. Highs around 80. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of rain. Lows in the upper 40s. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 30 percent. $$ MTZ325-221000- Madison River Valley- Including the cities of Cameron, Ennis, Jeffers, McAllister, and Norris 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Rain, snow and slight chance of thunderstorms. Snow accumulation up to 1 inch. Highs in the lower 50s. Lows 29 to 36. South winds up to 20 mph with gusts to around 35 mph. Chance of precipitation near 100 percent. .FRIDAY...Not as cool. Partly sunny. Highs in the mid 60s. South winds up to 5 mph shifting to the west in the afternoon. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the upper 30s. South winds up to 10 mph. .SATURDAY...Sunny. Highs in the lower 70s. South winds up to 10 mph shifting to the southwest in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. South winds 5 to 10 mph. Gusts up to 25 mph in the evening. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MEMORIAL DAY...Windy, sunny. Highs in the upper 70s. .MONDAY NIGHT...Breezy. Partly cloudy. A 20 percent chance of rain in the evening. Lows in the upper 40s. .TUESDAY...Windy. Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the lower 40s. Highs in the lower 70s. Chance of precipitation 30 percent. $$ MTZ326-221000- Gallatin Valley- Including the cities of Bozeman and Gallatin Gateway 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Rain, snow and slight chance of thunderstorms. Patchy fog early in the morning. Chance of rain showers early in the afternoon. No snow accumulation. Highs in the mid 50s. Lows 31 to 37. South winds up to 10 mph with gusts to around 30 mph. Chance of precipitation near 100 percent. .FRIDAY...Mostly sunny. Highs in the mid 60s. South winds up to 5 mph shifting to the northwest in the afternoon. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the upper 30s. East winds up to 5 mph shifting to the southeast after midnight. .SATURDAY...Sunny. Highs in the lower 70s. South winds up to 5 mph shifting to the west in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southwest winds 5 to 10 mph shifting to the south after midnight. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MEMORIAL DAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs around 80. .MONDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 40s. .TUESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the mid 40s. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of thunderstorms in the afternoon. Highs around 70. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 40s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of precipitation 40 percent. && TEMPERATURE / PRECIPITATION Bozeman Airport 32 66 36 75 / 90 0 0 0 Bozeman MSU 33 64 39 73 / 100 0 0 0 $$ MTZ330-221000- Gallatin and Madison County Mountains and Centennial Mountains- Including the cities of Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Snow, rain and slight chance of thunderstorms. Patchy fog early in the morning. Slight chance of snow showers in the afternoon. Snow accumulation up to 5 inches. Total snow accumulation up to 6 inches. Highs 37 to 49. Lows 23 to 34. North winds up to 15 mph with gusts to around 40 mph. Chance of precipitation near 100 percent. .FRIDAY...Not as cool. Partly sunny. Highs 49 to 59. Southwest winds up to 10 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows 31 to 37. South winds up to 10 mph. .SATURDAY...Warmer, sunny. Highs 56 to 68. South winds up to 10 mph shifting to the southwest with gusts to around 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 37 to 45. Southwest winds up to 15 mph. Gusts up to 30 mph in the evening. .SUNDAY AND SUNDAY NIGHT...Partly cloudy. Highs 61 to 73. Lows 40 to 46. .MEMORIAL DAY...Breezy, sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 64 to 74. .MONDAY NIGHT...Partly cloudy. Lows 41 to 47. .TUESDAY...Breezy. Mostly sunny. Slight chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 58 to 68. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain and snow. Lows 37 to 43. .WEDNESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 55 to 65. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 35 to 41. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 57 to 67. Chance of precipitation 40 percent. && TEMPERATURE / PRECIPITATION West Yellowstone 25 60 29 68 / 90 0 0 0 $$ MTZ327-221000- Northwest Beaverhead County- Including the cities of Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Partly cloudy. A 50 percent chance of snow and rain. Patchy fog early in the morning. Slight chance of snow showers late in the morning. Highs 45 to 55. Lows 28 to 33. Northeast winds up to 15 mph with gusts to around 40 mph. .FRIDAY...Not as cool. Mostly sunny. Highs 52 to 62. South winds up to 5 mph shifting to the west in the afternoon. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Northwest winds up to 10 mph shifting to the south after midnight. .SATURDAY...Warmer, sunny. Highs 59 to 69. Southwest winds up to 5 mph with gusts to around 20 mph shifting to the west 5 to 15 mph with gusts to around 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 30s. West winds 5 to 10 mph with gusts to around 30 mph shifting to the southwest with gusts to around 20 mph after midnight. .SUNDAY...Mostly sunny. Highs 62 to 72. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the lower 40s. .MEMORIAL DAY...Breezy. Mostly sunny. Highs 62 to 72. .MONDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then chance of rain and snow after midnight. Lows 38 to 44. Chance of precipitation 40 percent. .TUESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 55 to 65. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers, snow showers and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows in the upper 30s. Chance of precipitation 50 percent. .WEDNESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 53 to 63. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain and snow after midnight. Lows in the mid 30s. Chance of precipitation 50 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 56 to 66. Chance of precipitation 40 percent. $$ MTZ328-221000- Beaverhead and Western Madison below 6000ft- Including the cities of Bannack, Dillon, Glen, and Waterloo 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Rain with snow likely. Patchy fog early in the morning. Snow accumulation up to 3 inches. Highs 52 to 58. Lows 30 to 36. South winds up to 20 mph with gusts to around 40 mph. Chance of precipitation near 100 percent. .FRIDAY...Warmer. Mostly sunny. Highs 60 to 66. Southwest winds up to 10 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the upper 30s. North winds up to 10 mph shifting to the south after midnight. .SATURDAY...Warmer, sunny. Highs 69 to 75. South winds up to 5 mph shifting to the southwest 5 to 15 mph with gusts to around 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southwest winds up to 10 mph. Gusts up to 30 mph in the evening. .SUNDAY...Mostly sunny. Highs 73 to 79. .SUNDAY NIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the mid 40s. .MEMORIAL DAY...Breezy. Mostly sunny. Highs 73 to 79. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of rain. Lows in the mid 40s. .TUESDAY...Breezy. Partly sunny. Chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 66 to 72. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s. .WEDNESDAY...Partly sunny. Chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 64 to 70. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 40s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 66 to 72. Chance of precipitation 30 percent. && TEMPERATURE / PRECIPITATION Dillon 32 65 37 75 / 90 0 0 0 $$ MTZ329-221000- Ruby Mountains and Southern Beaverhead Mountains- Including the city of Monida Pass 1232 AM MDT Thu May 21 2026 .REST OF TONIGHT...Breezy. Mostly cloudy. Snow and rain likely. Snow accumulation up to 2 inches. Total snow accumulation up to 3 inches. Snow level 6800 feet. Highs 43 to 51. Lows 27 to 34. Northwest winds up to 25 mph with gusts to around 45 mph. Chance of precipitation 70 percent. .FRIDAY...Not as cool. Partly sunny. Highs 52 to 60. Southwest winds up to 10 mph with gusts to around 25 mph. .FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Lows in the mid 30s. Southwest winds up to 10 mph. .SATURDAY...Warmer, sunny. Highs 61 to 69. South winds up to 5 mph increasing to southwest 10 to 15 mph with gusts to around 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. West winds 10 to 15 mph with gusts to around 40 mph shifting to the south after midnight. .SUNDAY AND SUNDAY NIGHT...Breezy. Partly cloudy. Highs 65 to 73. Lows in the lower 40s. .MEMORIAL DAY...Windy, sunny. Highs 65 to 73. .MONDAY NIGHT...Windy. Partly cloudy with a 20 percent chance of rain. Lows in the mid 40s. .TUESDAY...Windy. Partly sunny. Chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 66. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain and snow. Lows in the upper 30s. .WEDNESDAY...Breezy. Partly sunny. Chance of rain and snow in the morning, then chance of thunderstorms in the afternoon. Highs 56 to 64. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Chance of rain and slight chance of thunderstorms in the evening. Lows in the upper 30s. Chance of precipitation 40 percent. .THURSDAY...Mostly sunny. Slight chance of rain and snow in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 58 to 66. Chance of precipitation 30 percent. $$