FPUS65 KTFX 072139 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 338 PM MDT Tue Jul 7 2026 MTZ301>314-316>318-081200- Central Montana- National Weather Service Great Falls MT 338 PM MDT Tue Jul 7 2026 .TONIGHT...Mostly clear. Lows 50 to 55. .WEDNESDAY...Sunny. Highs 80 to 90...70 to 80 in the mountains. .WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of showers and slight chance of thunderstorms. Lows 55 to 60...45 to 55 in the mountains. .THURSDAY...Mostly clear. Highs 75 to 85. .FRIDAY...Clear. Lows 50 to 60. Highs 85 to 95. .SATURDAY...Mostly clear. Lows 55 to 60. Highs 90 to 100. .SUNDAY...Partly cloudy. Lows 60 to 65. Highs 90 to 100. $$ MTZ315-319>330-081200- Southwest Montana- National Weather Service Great Falls MT 338 PM MDT Tue Jul 7 2026 .TONIGHT...Mostly clear. Lows 45 to 55. .WEDNESDAY...Sunny. Slight chance of thunderstorms in the afternoon. Highs 80 to 85...70 to 80 in the mountains. .WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Slight chance of showers and thunderstorms. Lows 45 to 55. .THURSDAY...Mostly clear. Highs 75 to 85. .FRIDAY...Clear. Lows 45 to 55. Highs 80 to 90. .SATURDAY...Mostly clear. Lows 50 to 60. Highs 85 to 95. .SUNDAY...Partly cloudy. Lows 55 to 60. Highs 85 to 95. $$