106 FPUS65 KTFX 180419 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1018 PM MDT Sun May 17 2026 MTZ301>314-316>318-181200- Central Montana- National Weather Service Great Falls MT 1018 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR Southern Rocky Mountain Front...Little Belt and Highwood Mountains... .REST OF TONIGHT...Mostly cloudy. Slight chance of rain late in the evening. Slight chance of snow through the night. Lows 25 to 30...20 to 25 in the mountains. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 45 to 55...35 to 45 in the mountains. .MONDAY NIGHT...Partly cloudy. Lows 25 to 30. .TUESDAY...Partly cloudy. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 35 to 40. Highs 55 to 65. .THURSDAY...Partly cloudy. Slight chance of rain. Lows 35 to 40. Highs 60 to 70. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 40 to 45. Highs 60 to 70. $$ MTZ315-319>330-181200- Southwest Montana- National Weather Service Great Falls MT 1018 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR Upper Blackfoot and MacDonald Pass... .REST OF TONIGHT...Mostly cloudy. Slight chance of snow. Lows 25 to 30...20 to 25 in the mountains. Gusts up to 35 mph late in the evening. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 45 to 55...35 to 45 in the mountains. Gusts up to 35 mph in the morning. .MONDAY NIGHT...Mostly clear. Lows 25 to 30...20 to 25 in the mountains. .TUESDAY...Partly cloudy. Highs 50 to 60. .WEDNESDAY...Partly cloudy. Chance of rain. Lows 30 to 35. Highs 50 to 60. .THURSDAY...Partly cloudy. Slight chance of rain. Lows 30 to 35. Highs 55 to 65. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 35 to 40. Highs 55 to 65. $$  716 FPUS65 KTFX 180438 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1038 PM MDT Sun May 17 2026 MTZ301>314-316>318-181200- Central Montana- National Weather Service Great Falls MT 1038 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR Southern Rocky Mountain Front...Little Belt and Highwood Mountains... .REST OF TONIGHT...Mostly cloudy. Slight chance of rain late in the evening. Slight chance of snow through the night. Patchy fog after midnight. Lows 25 to 30...20 to 25 in the mountains. .MONDAY...Partly cloudy. Patchy fog in the morning. Highs 45 to 55...35 to 45 in the mountains. .MONDAY NIGHT...Mostly clear. Lows 25 to 30. .TUESDAY...Partly cloudy. Slight chance of rain. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Chance of rain. Lows 35 to 40. Highs 55 to 65. .THURSDAY...Mostly cloudy. Slight chance of rain. Lows 35 to 40. Highs 60 to 70. .FRIDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 40 to 45. Highs 60 to 70. $$ MTZ315-319>330-181200- Southwest Montana- National Weather Service Great Falls MT 1038 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR Upper Blackfoot and MacDonald Pass... .REST OF TONIGHT...Mostly cloudy. Slight chance of snow. Lows 25 to 30...15 to 25 in the mountains. Gusts up to 35 mph late in the evening. .MONDAY...Partly cloudy. Slight chance of snow. Highs 40 to 50... 30 to 40 in the mountains. Gusts up to 35 mph in the morning. .MONDAY NIGHT...Mostly clear. Lows 20 to 30...15 to 25 in the mountains. .TUESDAY...Partly cloudy. Highs 50 to 60. .WEDNESDAY...Partly cloudy. Chance of rain. Lows 25 to 35. Highs 50 to 60. .THURSDAY...Mostly cloudy. Chance of rain. Lows 30 to 35. Highs 55 to 65. .FRIDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 35 to 40. Highs 55 to 65. $$