SXUS45 KMSO 161230 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 605 AM MDT Fri Oct 16 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. Patchy freezing fog in the morning. Highs around 60 . Variable winds up to 10 mph. Waves less than 1 foot. .Tonight...Partly cloudy. Lows in the mid 40s. Variable winds up to 10 mph. Waves less than 1 foot. .SATURDAY...Breezy. Mostly sunny. Highs in the lower 60s. Variable winds up to 10 mph becoming southwest 15 to 25 mph in the afternoon. Waves around 1 foot...locally up to 2 feet. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Variable winds up to 10 mph. Gusts up to 25 mph in the evening. Waves around 1 foot...locally up to 2 feet. .SUNDAY...Sunny. Highs in the mid 50s. Variable winds up to 10 mph. Waves less than 1 foot.