SXUS45 KMSO 092250 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 404 PM MDT Fri May 9 2025 .Today...Partly 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 lower 50s. Variable winds up to 10 mph. .SATURDAY...Partly sunny. Highs around 80 . Variable winds up to 10 mph becoming south around 15 mph in the afternoon. .SATURDAY NIGHT...Mostly cloudy. A 20 percent chance of rain after midnight. Lows in the lower 50s. West winds around 15 mph in the evening becoming light. .SUNDAY...Cooler. Mostly cloudy with a 50 percent chance of rain. Highs around 70 . Variable winds up to 10 mph.