SXUS45 KMSO 271230 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 605 AM MDT Mon Oct 27 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. .Today...Breezy. Cloudy until late afternoon then becoming partly sunny. Rain and snow likely in the morning, then a chance of rain and snow in the afternoon. No snow accumulation. Highs in the lower 40s. Southwest winds 15 to 20 mph. Chance of precipitation 70 percent. Waves around 1 foot...locally up to 2 feet. .Tonight...Mostly cloudy with a 40 percent chance of rain and snow. Lows in the lower 30s. Variable winds up to 10 mph. Waves around 1 foot...locally up to 2 feet. .TUESDAY...Mostly sunny. Highs in the mid 40s. Variable winds up to 10 mph. Waves around 1 foot...locally up to 2 feet. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. Variable winds up to 10 mph. Waves less than 1 foot. .WEDNESDAY...Mostly cloudy. Rain likely in the morning, then a chance of rain in the afternoon. Highs in the mid 40s. South winds around 15 mph. Chance of rain 60 percent. Waves around 1 foot...locally up to 2 feet.