FPUS65 KTFX 082139 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 338 PM MDT Wed Jul 8 2026 MTZ301>314-316>318-091200- Central Montana- National Weather Service Great Falls MT 338 PM MDT Wed Jul 8 2026 .TONIGHT...Mostly clear. Chance of showers and slight chance of thunderstorms in the evening. Lows 55 to 60...45 to 55 in the mountains. .THURSDAY...Sunny. Highs 80 to 90...70 to 80 in the mountains. .THURSDAY NIGHT...Mostly clear. Lows 55 to 60...45 to 55 in the mountains. .FRIDAY...Clear. 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. .MONDAY...Partly cloudy. Lows 60 to 65. Highs 85 to 95. $$ MTZ315-319>330-091200- Southwest Montana- National Weather Service Great Falls MT 338 PM MDT Wed Jul 8 2026 .TONIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows 45 to 55. .THURSDAY...Sunny. Highs 80 to 85...70 to 80 in the mountains. .THURSDAY NIGHT...Mostly clear. Lows 45 to 55. .FRIDAY...Mostly clear. Highs 80 to 90. .SATURDAY...Mostly clear. Lows 50 to 55. Highs 85 to 95. .SUNDAY...Partly cloudy. Lows 55 to 60. Highs 85 to 95. .MONDAY...Partly cloudy. Lows 55 to 60. Highs 80 to 90. $$