936 FPUS65 KTFX 230439 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1038 PM MDT Sat Aug 22 2026 MTZ301>314-316>318-231200- Central Montana- National Weather Service Great Falls MT 1038 PM MDT Sat Aug 22 2026 .REST OF TONIGHT...Mostly cloudy. Slight chance of showers late in the evening. Lows 55 to 65. .SUNDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 80 to 90...70 to 80 in the mountains. .SUNDAY NIGHT...Mostly clear. Lows 50 to 60...45 to 55 in the mountains. .MONDAY...Mostly clear. Highs 75 to 80. .TUESDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. .WEDNESDAY...Partly cloudy. Slight chance of showers. Lows 50 to 60. Highs 80 to 90. .THURSDAY...Partly cloudy. Slight chance of showers. Lows 55 to 60. Highs 80 to 90. $$ MTZ315-319>330-231200- Southwest Montana- National Weather Service Great Falls MT 1038 PM MDT Sat Aug 22 2026 .REST OF TONIGHT...Mostly cloudy. Slight chance of showers and thunderstorms late in the evening. Lows 50 to 60. .SUNDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 75 to 85...70 to 80 in the mountains. Southwest winds 20 to 25 mph with gusts to 35 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Patchy smoke. Lows 45 to 50. .MONDAY...Mostly clear. Patchy smoke. Highs 75 to 85. .TUESDAY...Partly cloudy. Lows 50 to 55. Highs 75 to 85. .WEDNESDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 50 to 55. Highs 75 to 85. .THURSDAY...Partly cloudy. Slight chance of rain showers. Lows 50 to 55. Highs 75 to 85. $$