SXUS45 KMSO 032330 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 406 PM MST Tue Feb 3 2026 Note: The experimental wave height forecasts are representative of the mid lake waters and downwind shores. Wave heights may be significantly less on upwind shores. .Tonight...Mostly cloudy. Lows in the upper 30s. Variable winds up to 10 mph. Waves less than 1 foot. .WEDNESDAY...Mostly cloudy. Highs in the upper 40s. Variable winds up to 10 mph. Waves less than 1 foot. .WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 30s. Variable winds up to 10 mph. Waves less than 1 foot. .THURSDAY...Mostly sunny. Highs in the mid 50s. Variable winds up to 10 mph. Waves less than 1 foot.