FLUS45 KMSO 222000 AFPMSO Area Forecast for Montana west of the Continental Divide National Weather Service Missoula MT 200 PM MDT Sun Mar 22 2026 MTZ001>007-043-231500- West of the Continental Divide- National Weather Service Missoula MT 200 PM MDT Sun Mar 22 2026 .TONIGHT...Partly cloudy. Lows in the mid 20s to lower 30s. .MONDAY...Partly cloudy. Highs in the mid 50s to lower 60s. .MONDAY NIGHT...Mostly cloudy. Lows in the upper 30s. .TUESDAY...A chance of rain in the morning, then rain likely in the afternoon and evening. Highs in the 50s to lower 60s. .WEDNESDAY...Mostly cloudy with rain likely and a chance of snow. Lows in the lower 40s. Highs in the 50s. .THURSDAY...Partly cloudy. Lows in the upper 20s. Highs in the 40s. .FRIDAY...Mostly clear. Lows 19 to 26. Highs in the 50s. $$