Area Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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592 FPUS65 KTFX 312138 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 337 PM MDT Mon Aug 31 2026 MTZ301>314-316>318-011200- Central Montana- National Weather Service Great Falls MT 337 PM MDT Mon Aug 31 2026 .TONIGHT...Mostly clear. Lows 45 to 50. .TUESDAY...Partly cloudy. Highs 80 to 85...70 to 80 in the mountains. .TUESDAY NIGHT...Mostly cloudy. Slight chance of rain showers. Lows 50 to 55. .WEDNESDAY...Mostly cloudy. Chance of rain showers. Highs 75 to 85. .THURSDAY...Partly cloudy. Lows 45 to 50. Highs 70 to 80. .FRIDAY...Partly cloudy. Slight chance of rain showers. Lows 45 to 50. Highs 70 to 80. .SATURDAY...Partly cloudy. Chance of rain showers. Lows 45 to 50. Highs 65 to 75. $$ MTZ315-319>330-011200- Southwest Montana- National Weather Service Great Falls MT 337 PM MDT Mon Aug 31 2026 ...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING FOR Madison River Valley... .TONIGHT...Increasing clouds. Lows 45 to 50. .TUESDAY...Mostly cloudy in the morning then becoming partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 70 to 80...65 to 75 in the mountains. .TUESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms. Lows 40 to 50. .WEDNESDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs 65 to 75. .THURSDAY...Partly cloudy. Lows 40 to 50. Highs 65 to 75. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 40 to 50. Highs 65 to 75. .SATURDAY...Partly cloudy. Slight chance of rain showers. Lows 40 to 50. Highs 65 to 75. $$