Expires:202512271100;;287071 FPUS65 KTFX 270131 SFPMT State Forecast For Montana National Weather Service Great Falls MT 631 PM MST Fri Dec 26 2025 MTZ315-319>330-271100- Southwest Montana- National Weather Service Great Falls MT 631 PM MST Fri Dec 26 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST SATURDAY FOR Upper Blackfoot and MacDonald Pass...Big Belt, Bridger and Castle Mountains...Northwest Beaverhead County...Gallatin and Madison County Mountains and Centennial Mountains... .REST OF TONIGHT...Increasing clouds. Chance of snow after midnight. Lows 15 to 25...10 to 20 in the mountains. Southwest winds 20 to 30 mph with gusts to 35 mph. .SATURDAY...Mostly cloudy. Chance of snow. Highs 20 to 30...15 to 25 in the mountains. West winds 20 to 30 mph. Gusts up to 35 mph in the morning. .SATURDAY NIGHT...Partly cloudy. Colder. Slight chance of snow. Lows zero to 10 above...5 below to 5 above zero in the mountains. .SUNDAY...Mostly clear. Highs 15 to 20. .MONDAY...Mostly clear. Lows 10 to 25. Highs 25 to 35. .TUESDAY...Mostly cloudy. Lows 15 to 25. Highs 30 to 40. .WEDNESDAY...Mostly cloudy. Lows 15 to 25. Highs 30 to 40. $$