548 SXUS45 KMSO 311230 RECGPI Recreation Forecast for Flathead Lake National Weather Service Missoula MT 605 AM MDT Sun Mar 31 2019 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...Partly sunny. Highs in the upper 40s. Variable winds up to 10 mph. Waves less than 1 foot. .Tonight...Mostly cloudy. Lows in the lower 30s. Variable winds up to 10 mph. Waves less than 1 foot. .MONDAY...Partly sunny. Highs in the mid 40s. Variable winds up to 10 mph. Waves around 1 foot...locally up to 2 feet. .MONDAY NIGHT...Partly cloudy. Lows around 30 . Northeast winds around 15 mph in the evening becoming light. Waves around 1 foot...locally up to 2 feet. .TUESDAY...Mostly sunny. Highs in the upper 40s. Variable winds up to 10 mph. Waves around 1 foot...locally up to 2 feet.