207 FPUS65 KTFX 200904 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 303 AM MDT Wed May 20 2026 MTZ301>314-316>318-210000- Central Montana- National Weather Service Great Falls MT 303 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Chance of rain showers through the day. Chance of thunderstorms in the afternoon. Highs 50 to 60...45 to 55 in the mountains. .TONIGHT...Mostly cloudy. Chance of rain showers. Lows 35 to 40... 25 to 35 in the mountains. .THURSDAY...Mostly cloudy then becoming partly cloudy. Slight chance of rain showers in the afternoon and evening. Highs 55 to 65...45 to 55 in the mountains. .FRIDAY...Partly cloudy. Lows 35 to 40. Highs 60 to 70. .SATURDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 75 to 85. $$ MTZ315-319>330-210000- Southwest Montana- National Weather Service Great Falls MT 303 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Chance of showers and thunderstorms in the afternoon. Highs 55 to 60...45 to 55 in the mountains. .TONIGHT...Mostly cloudy. Rain showers, snow showers and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows 30 to 35. .THURSDAY...Mostly cloudy then becoming partly cloudy in the afternoon then becoming mostly clear. Chance of snow. Highs 50 to 60...40 to 50 in the mountains. .FRIDAY...Partly cloudy. Lows 30 to 35. Highs 55 to 65. .SATURDAY...Mostly clear. Lows 35 to 40. Highs 65 to 75. .SUNDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. $$  885 FPUS65 KTFX 200938 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 337 AM MDT Wed May 20 2026 MTZ301>314-316>318-210000- Central Montana- National Weather Service Great Falls MT 337 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Slight chance of rain in the morning, then chance of showers and thunderstorms in the afternoon. Highs 50 to 60...45 to 55 in the mountains. .TONIGHT...Mostly cloudy. Chance of rain showers. Lows 35 to 40... 25 to 35 in the mountains. .THURSDAY...Mostly cloudy then becoming partly cloudy. Slight chance of rain showers in the afternoon and evening. Highs 55 to 65...45 to 55 in the mountains. .FRIDAY...Partly cloudy. Lows 35 to 40. Highs 60 to 70. .SATURDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 75 to 85. $$ MTZ315-319>330-210000- Southwest Montana- National Weather Service Great Falls MT 337 AM MDT Wed May 20 2026 .TODAY...Mostly cloudy. Slight chance of rain and snow in the morning. Chance of showers and thunderstorms in the afternoon. Highs 55 to 60...45 to 55 in the mountains. .TONIGHT...Mostly cloudy. Rain showers, snow showers and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows 30 to 35. .THURSDAY...Mostly cloudy then becoming partly cloudy in the afternoon then becoming mostly clear. Chance of snow. Highs 50 to 60...40 to 50 in the mountains. .FRIDAY...Partly cloudy. Lows 30 to 35. Highs 55 to 65. .SATURDAY...Mostly clear. Lows 35 to 40. Highs 65 to 75. .SUNDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. $$