SXUS45 KMSO 090930 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 304 AM MDT Fri May 9 2025 .Today...Mostly sunny. Highs in the lower 70s. Variable winds up to 10 mph. .Tonight...Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. Variable winds up to 10 mph. .SATURDAY...Partly sunny. Highs around 80 . Variable winds up to 10 mph. .SATURDAY NIGHT...Mostly cloudy with a 20 percent chance of rain. Lows in the lower 50s. West winds around 15 mph in the evening becoming light. .SUNDAY...Cooler. Mostly cloudy. A chance of rain in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Variable winds up to 10 mph. Chance of precipitation 50 percent.