FLUS45 KMSO 190135 AFPMSO Area Forecast for Montana west of the Continental Divide National Weather Service Missoula MT 735 PM MDT Wed Mar 18 2026 MTZ001>007-043-191500- West of the Continental Divide- National Weather Service Missoula MT 735 PM MDT Wed Mar 18 2026 .TONIGHT...Mostly cloudy with a slight chance of rain. Lows in the mid 30s to lower 40s. .THURSDAY...Partly cloudy with a chance of rain. Highs in the 60s to lower 70s. .THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the upper 30s to mid 40s. .FRIDAY...Mostly cloudy. A chance of rain in the morning, then rain likely in the afternoon and evening. Highs in the 60s to lower 70s. .SATURDAY...Mostly cloudy. A chance of rain. Lows in the lower 40s. Highs in the 50s. .SUNDAY...Mostly clear. Lows in the 20s to lower 30s. Highs in the 50s. .MONDAY...Mostly cloudy. Lows in the mid 20s to lower 30s. Highs in the 50s. $$