SXUS45 KMSO 022330 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 505 PM MDT Wed Jul 2 2025 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...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Some thunderstorms may produce strong gusty winds in the evening. Lows around 60 . South winds around 15 mph with gusts to around 30 mph in the evening becoming light. Waves around 1 foot...locally up to 2 feet. .THURSDAY...Sunny. Highs around 80 . South winds around 15 mph. Waves less than 1 foot. .THURSDAY NIGHT...Mostly clear. Lows in the upper 50s. Variable winds up to 10 mph. Waves less than 1 foot. .Independence Day...Mostly sunny in the morning, then mostly cloudy with a 20 percent chance of showers in the afternoon. Highs in the mid 70s. Variable winds up to 10 mph. Waves less than 1 foot.