SXUS45 KMSO 021230 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 505 AM MST Mon Mar 2 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. .Today...Sunny. Highs around 50 . Variable winds up to 10 mph. Waves less than 1 foot. .Tonight...Mostly clear. Lows in the mid 30s. Variable winds up to 10 mph. Waves less than 1 foot. .TUESDAY...Partly sunny. Highs around 50 . Variable winds up to 10 mph. Waves less than 1 foot. .TUESDAY NIGHT...Mostly cloudy. A 40 percent chance of rain after midnight. Lows in the lower 40s. Variable winds up to 10 mph. Waves less than 1 foot. .WEDNESDAY...Rain. Highs around 50 . Variable winds up to 10 mph. Chance of rain 90 percent. Waves less than 1 foot.