FPUS65 KTFX 262200 SFPMT State Forecast For Montana National Weather Service Great Falls MT 400 PM MDT Tue May 26 2026 MTZ001>007-043-271000- West of the Continental Divide- National Weather Service Missoula MT 400 PM MDT Tue May 26 2026 .../NOTICE/ This Area Forecast Product (AFP) and State Forecast Product (SFP) for Montana will be discontinued July 6, 2026... .TONIGHT...Rain showers likely and a chance of thunderstorms. Areas of fog. Some thunderstorms may produce gusty winds and small hail. Lows in the 40s. .WEDNESDAY...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Areas of fog. Highs in the 80s. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain showers. Lows in the mid 40s to lower 50s. .THURSDAY...Mostly sunny in the morning then becoming partly cloudy. Chance of rain showers in the afternoon and evening. Highs in the mid 80s to lower 90s. .FRIDAY...Mostly cloudy. Rain showers likely and a chance of thunderstorms. Lows in the mid 40s to lower 50s. Highs in the upper 70s to mid 80s. .SATURDAY...Rain showers likely. Lows in the 40s to lower 50s. Highs in the 60s. .SUNDAY...Mostly cloudy with a chance of rain showers. Lows in the upper 30s to mid 40s. Highs in the 60s. $$ MTZ301>314-316>318-271000- Central Montana- National Weather Service Great Falls MT 400 PM MDT Tue May 26 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM MDT WEDNESDAY FOR Hill County...Northern Blaine County... .TONIGHT...Mostly cloudy. Chance of thunderstorms in the evening. Chance of rain showers through the night. Slight chance of thunderstorms after midnight. Lows 55 to 65...45 to 60 in the mountains. .WEDNESDAY...Mostly cloudy. Chance of rain showers through the day. Slight chance of thunderstorms in the afternoon. Highs 85 to 95...65 to 75 in the mountains. .WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 50 to 60. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Highs 85 to 95. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 55 to 60. Highs 85 to 95. .SATURDAY...Not as warm. Rain showers and slight chance of thunderstorms. Lows 50 to 60. Highs 70 to 80. .SUNDAY...Mostly cloudy. Chance of rain. Lows 45 to 50. Highs 60 to 70. $$ MTZ315-319>330-271000- Southwest Montana- National Weather Service Great Falls MT 400 PM MDT Tue May 26 2026 .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of showers and thunderstorms in the evening. Lows 40 to 50. .WEDNESDAY...Increasing clouds. Slight chance of thunderstorms in the afternoon. Highs 75 to 85...65 to 75 in the mountains. .WEDNESDAY NIGHT...Mostly cloudy in the evening then clearing. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 55...40 to 50 in the mountains. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Highs 75 to 85. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 55. Highs 75 to 85. .SATURDAY...Cooler. Rain showers and chance of thunderstorms. Lows 40 to 50. Highs 55 to 65. .SUNDAY...Rain likely and slight chance of thunderstorms. Lows 35 to 45. Highs 55 to 65. $$ MTZ016>027-059>062-271000- Northeast Montana- National Weather Service Glasgow MT 400 PM MDT Tue May 26 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM NOON TO 9 PM MDT WEDNESDAY... .TONIGHT...Mostly cloudy. Lows in the 60s. .WEDNESDAY...Partly cloudy. Highs in the 90s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid to upper 60s. .THURSDAY...Sunny in the morning then becoming partly cloudy. Highs in the mid to upper 90s. .FRIDAY...Partly cloudy. Highs in the mid to upper 90s. Lows in the mid to upper 60s. .SATURDAY...Showers likely and a chance of thunderstorms. Highs in the mid 80s to lower 90s. Lows in the lower to mid 60s. .SUNDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the mid 70s to lower 80s. Lows in the mid to upper 50s. $$ MTZ028>042-056>058-063>068-271000- South Central and Southeast Montana- National Weather Service Billings MT 400 PM MDT Tue May 26 2026 .TONIGHT...Mostly cloudy. Slight chance of thunderstorms west... and slight chance of showers east. Lows in the upper 40s to lower 60s. .WEDNESDAY...Mostly sunny. Highs in the lower 80s to mid 90s. .WEDNESDAY NIGHT...Partly cloudy. Lows from the upper 40s west to the mid 60s east. .THURSDAY...Mostly sunny. Highs in the upper 80s to the upper 90s. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 50s to the mid 60s. Highs in the mid 80s to the mid 90s. .FRIDAY NIGHT...Mostly cloudy. Chance of showers and slight chance of thunderstorms west...and slight chance of thunderstorms east. Lows around 50 to the mid 60s. .SATURDAY...Mostly cloudy. Rain showers likely and chance of thunderstorms. Highs from the lower 70s west to the upper 80s east. .SATURDAY NIGHT...Mostly cloudy. Chance of thunderstorms. Lows in the lower 40s to mid 50s. .SUNDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms. Highs in the upper 60s to around 80. $$