Area Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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853 FPUS65 KTFX 180634 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1233 AM MDT Tue Aug 18 2026 MTZ301>314-316>318-191200- Central Montana- National Weather Service Great Falls MT 1233 AM MDT Tue Aug 18 2026 .REST OF TONIGHT...Partly cloudy. Patchy smoke. Slight chance of thunderstorms in the afternoon. Slight chance of rain showers in the afternoon and evening. Highs 75 to 85...65 to 75 in the mountains. Lows 50 to 60...45 to 55 in the mountains. .WEDNESDAY...Partly cloudy. Patchy smoke. Highs 80 to 85...70 to 80 in the mountains. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 60. .THURSDAY...Mostly clear. Highs 75 to 85. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 80 to 90. .SATURDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 55 to 60. Highs 80 to 90. .SUNDAY...Mostly clear. Slight chance of rain showers. Lows 50 to 60. Highs 75 to 85. $$ MTZ315-319>330-191200- Southwest Montana- National Weather Service Great Falls MT 1233 AM MDT Tue Aug 18 2026 .REST OF TONIGHT...Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the afternoon. Slight chance of rain showers in the evening. Highs 75 to 80...60 to 70 in the mountains. Lows 45 to 55. .WEDNESDAY...Sunny. Highs 75 to 85...65 to 75 in the mountains. .WEDNESDAY NIGHT...Mostly clear. Lows 45 to 55. .THURSDAY...Mostly clear. Highs 75 to 85. .FRIDAY...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 50 to 55. Highs 75 to 85. .SATURDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 55 to 60. Highs 75 to 85. .SUNDAY...Partly cloudy. Slight chance of rain showers. Lows 50 to 55. Highs 70 to 80. $$