FPUS65 KTFX 090634 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1233 AM MDT Thu Jul 9 2026 MTZ301>314-316>318-101200- Central Montana- National Weather Service Great Falls MT 1233 AM MDT Thu Jul 9 2026 .REST OF TONIGHT...Mostly clear. Highs 80 to 90...70 to 80 in the mountains. Lows 55 to 60...45 to 55 in the mountains. .FRIDAY...Sunny. Highs 85 to 95...75 to 85 in the mountains. .FRIDAY NIGHT...Mostly clear. Slight chance of showers. Lows 55 to 65...50 to 60 in the mountains. .SATURDAY...Mostly clear. Highs 90 to 100. .SUNDAY...Partly cloudy. Lows 60 to 65. Highs 90 to 100. .MONDAY...Partly cloudy. Lows 60 to 65. Highs 85 to 95. .TUESDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows 60 to 65. Highs 80 to 90. $$ MTZ315-319>330-101200- Southwest Montana- National Weather Service Great Falls MT 1233 AM MDT Thu Jul 9 2026 .REST OF TONIGHT...Mostly clear. Highs 80 to 85...70 to 80 in the mountains. Lows 45 to 55. .FRIDAY...Sunny. Highs 80 to 90...70 to 80 in the mountains. .FRIDAY NIGHT...Mostly clear. Slight chance of rain showers. Lows 50 to 60. .SATURDAY...Clear. Highs 85 to 95. .SUNDAY...Partly cloudy. Lows 55 to 60. Highs 90 to 100. .MONDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 55 to 65. Highs 80 to 90. .TUESDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 55 to 65. Highs 75 to 85. $$