Area Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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219 FPUS65 KTFX 150938 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 337 AM MDT Tue Sep 15 2026 MTZ301>314-316>318-160000- Central Montana- National Weather Service Great Falls MT 337 AM MDT Tue Sep 15 2026 .TODAY...Mostly cloudy. Highs 55 to 65...50 to 60 in the mountains. .TONIGHT...Mostly cloudy. Chance of rain through the night. Lows 40 to 45...35 to 40 in the mountains. .WEDNESDAY...Mostly cloudy then becoming partly cloudy in the afternoon then becoming mostly clear. Highs 55 to 65...50 to 60 in the mountains. .THURSDAY...Mostly clear. Chance of rain showers. Lows 40 to 45. Highs 65 to 75. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 50. Highs 60 to 70. .SATURDAY...Partly cloudy. Slight chance of rain. Lows 45 to 50. Highs 65 to 75. $$ MTZ315-319>330-160000- Southwest Montana- National Weather Service Great Falls MT 337 AM MDT Tue Sep 15 2026 .TODAY...Sunny. Highs 65 to 70...55 to 65 in the mountains. .TONIGHT...Partly cloudy. Lows 35 to 40. .WEDNESDAY...Mostly clear. Highs 60 to 70...55 to 65 in the mountains. .THURSDAY...Rain showers likely and slight chance of thunderstorms. Lows 40 to 45. Highs 65 to 75. .FRIDAY...Rain showers likely and slight chance of thunderstorms. Lows 40 to 50. Highs 55 to 65. .SATURDAY...Partly cloudy. Slight chance of rain. Lows 35 to 45. Highs 60 to 70. $$