SXUS45 KMSO 021230 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 506 AM MST Mon Nov 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...Mostly sunny. Highs around 50 . Variable winds up to 10 mph. Waves less than 1 foot. .Tonight...Mostly clear in the evening then becoming mostly cloudy. Lows in the upper 30s. Variable winds up to 10 mph. Waves less than 1 foot. .TUESDAY...Cloudy in the morning then becoming partly sunny. Highs around 50 . Variable winds up to 10 mph. Waves less than 1 foot. .TUESDAY NIGHT...Mostly cloudy. Lows around 40 . Variable winds up to 10 mph. Waves less than 1 foot. .WEDNESDAY...Partly sunny in the morning then clearing. Highs around 50 . Variable winds up to 10 mph. Waves less than 1 foot.