


State Forecast
Issued by NWS
Issued by NWS
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711 FPUS65 KTFX 181148 SFPMT State Forecast For Montana National Weather Service Great Falls MT 548 AM MDT Mon Aug 18 2025 MTZ001>007-043-182200- West of the Continental Divide- National Weather Service Missoula MT 548 AM MDT Mon Aug 18 2025 .TODAY...Partly cloudy with a chance of rain showers and a slight chance of thunderstorms. Highs in the 80s to lower 90s. .TONIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .TUESDAY...Mostly clear. Highs in the upper 80s to mid 90s. .WEDNESDAY...Mostly clear. Lows in the upper 40s to mid 50s. Highs in the mid 80s to lower 90s. .THURSDAY...Mostly clear. Lows in the mid 40s to lower 50s. Highs in the 80s. .FRIDAY...Mostly clear. Lows in the mid 40s to lower 50s. Highs in the mid 80s to lower 90s. $$ MTZ301>314-316>318-182200- Central Montana- National Weather Service Great Falls MT 548 AM MDT Mon Aug 18 2025 .TODAY...Sunny. Highs 80 to 90...70 to 80 in the mountains. .TONIGHT...Mostly clear. Slight chance of showers. Lows 55 to 65. .TUESDAY...Mostly clear. Highs 90 to 95...80 to 90 in the mountains. .WEDNESDAY...Mostly clear. Lows 55 to 65. Highs 85 to 95. .THURSDAY...Mostly clear. Slight chance of showers and thunderstorms. Lows 50 to 60. Highs 75 to 80. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 70 to 80. $$ MTZ315-319>330-182200- Southwest Montana- National Weather Service Great Falls MT 548 AM MDT Mon Aug 18 2025 .TODAY...Sunny. Slight chance of showers and thunderstorms in the afternoon. Highs 80 to 90...70 to 80 in the mountains. .TONIGHT...Mostly clear. Slight chance of showers and thunderstorms. Lows 50 to 60. .TUESDAY...Mostly clear. Highs 85 to 95...75 to 85 in the mountains. .WEDNESDAY...Partly cloudy. Lows 50 to 60. Highs 80 to 90. .THURSDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. .FRIDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. $$ MTZ016>027-059>062-182200- Northeast Montana- National Weather Service Glasgow MT 548 AM MDT Mon Aug 18 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 8 PM MDT WEDNESDAY... .TODAY...Sunny. Highs near 90. .TONIGHT...Mostly clear. Lows in the lower to mid 60s. .TUESDAY...Mostly clear. Highs 97 to 101. .WEDNESDAY...Mostly clear. Highs 95 to 100. Lows in the mid 60s to lower 70s. .THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs near 80. Lows in the lower to mid 60s. .FRIDAY...Mostly clear. Highs in the mid to upper 70s. Lows in the 50s. $$ MTZ028>042-056>058-063>068-182200- South Central and Southeast Montana- National Weather Service Billings MT 548 AM MDT Mon Aug 18 2025 .TODAY...Sunny. Highs in the upper 80s to mid 90s. .TONIGHT...Mostly clear. Lows in the mid 50s to the mid 60s. .TUESDAY...Sunny. Highs 93 to 103. .TUESDAY NIGHT...Mostly clear. Lows in the upper 50s to lower 70s. .WEDNESDAY...Sunny. Highs 93 to 102. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 50s to upper 60s. .THURSDAY...Sunny. Slight chance of thunderstorms. Highs in the 80s. .THURSDAY NIGHT...Partly cloudy. Slight chance of thunderstorms west...and chance of showers and slight chance of thunderstorms east. Lows around 50 to the lower 60s. .FRIDAY...Sunny. Highs in the upper 70s to mid 80s. $$