FLUS45 KMSO 051821 AFPMSO Area Forecast for Montana west of the Continental Divide National Weather Service Missoula MT 1221 PM MDT Tue May 5 2026 MTZ001>007-043-061500- West of the Continental Divide- National Weather Service Missoula MT 1221 PM MDT Tue May 5 2026 .TONIGHT...Mostly clear. Lows in the upper 20s to mid 30s. .WEDNESDAY...Mostly sunny. Highs in the upper 60s to mid 70s. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the 40s. .THURSDAY...Partly cloudy with a chance of rain. Highs in the upper 60s to mid 70s. .FRIDAY...Mostly cloudy. Lows in the upper 30s to mid 40s. Highs in the mid 60s to lower 70s. .SATURDAY...Mostly cloudy. Lows in the upper 30s to mid 40s. Highs in the 60s to lower 70s. .SUNDAY...Partly cloudy. Lows in the mid 30s to lower 40s. Highs in the 70s to lower 80s. $$