537 FPUS65 KTFX 240634 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1233 AM MDT Mon Aug 24 2026 MTZ301>314-316>318-251200- Central Montana- National Weather Service Great Falls MT 1233 AM MDT Mon Aug 24 2026 .REST OF TONIGHT...Mostly clear. Patchy smoke. Highs 75 to 80... 65 to 75 in the mountains. Lows 50 to 60...45 to 55 in the mountains. .TUESDAY...Sunny. Highs 75 to 85...65 to 75 in the mountains. .TUESDAY NIGHT...Mostly clear. Lows 50 to 55. .WEDNESDAY...Partly cloudy. Highs 80 to 90. .THURSDAY...Partly cloudy. Chance of showers. Lows 55 to 60. Highs 85 to 95. .FRIDAY...Mostly clear. Lows 50 to 60. Highs 80 to 90. .SATURDAY...Partly cloudy. Chance of rain showers. Lows 50 to 60. Highs 75 to 85. $$ MTZ315-319>330-251200- Southwest Montana- National Weather Service Great Falls MT 1233 AM MDT Mon Aug 24 2026 .REST OF TONIGHT...Partly cloudy. Patchy smoke. Highs 75 to 85... 65 to 75 in the mountains. Lows 45 to 55. .TUESDAY...Partly cloudy. Patchy smoke in the morning. Slight chance of thunderstorms in the afternoon. Highs 75 to 85...65 to 75 in the mountains. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 55. .WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms. Highs 75 to 85. .THURSDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 55. Highs 75 to 85. .FRIDAY...Partly cloudy. Slight chance of rain showers. Lows 45 to 55. Highs 70 to 80. .SATURDAY...Partly cloudy. Slight chance of rain showers. Lows 45 to 55. Highs 70 to 80. $$