FPUS65 KTFX 220649 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1248 AM MDT Sun Mar 22 2026 MTZ301>314-316>318-231200- Central Montana- National Weather Service Great Falls MT 1248 AM MDT Sun Mar 22 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM MDT THIS MORNING FOR Judith Basin County and Judith Gap...Fergus County below 4500ft... .REST OF TONIGHT...Partly cloudy. Patchy fog after midnight. Highs 45 to 55...35 to 45 in the mountains. Lows 25 to 30. Southwest winds around 20 mph with gusts to 35 mph. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 50 to 60...45 to 55 in the mountains. .MONDAY NIGHT...Mostly cloudy. Lows 30 to 40. .TUESDAY...Mostly cloudy. Slight chance of rain and snow. Highs 50 to 60. .WEDNESDAY...Partly cloudy. Chance of rain and snow. Lows 35 to 40. Highs 50 to 60. .THURSDAY...Partly cloudy. Slight chance of snow. Lows 20 to 30. Highs 40 to 50. .FRIDAY...Mostly clear. Lows 20 to 25. Highs 45 to 55. $$ MTZ315-319>330-231200- Southwest Montana- National Weather Service Great Falls MT 1248 AM MDT Sun Mar 22 2026 .REST OF TONIGHT...Partly cloudy. Highs 50 to 60...40 to 50 in the mountains. Lows 25 to 35. .MONDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 55 to 65...45 to 55 in the mountains. .MONDAY NIGHT...Mostly cloudy. Lows 35 to 45...30 to 40 in the mountains. .TUESDAY...Mostly cloudy. Slight chance of rain. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Lows 35 to 45. Highs 50 to 60. .THURSDAY...Partly cloudy. Slight chance of snow. Lows 25 to 30. Highs 40 to 50. .FRIDAY...Partly cloudy. Lows 20 to 30. Highs 45 to 55. $$