SXUS45 KMSO 222330
RECGPI

Recreation Forecast for Flathead Lake
National Weather Service Missoula MT
505 PM MDT Sat Aug 22 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.

.Tonight...Mostly cloudy then becoming partly cloudy after
midnight then becoming mostly cloudy. A slight chance of
thunderstorms early in the evening. A slight chance of showers in
the late evening and overnight. Some thunderstorms may produce
strong gusty winds early in the evening. Lows around 60 .
Variable winds up to 10 mph. Chance of precipitation 20 percent.
Waves less than 1 foot. 
.SUNDAY...Breezy, sunny. A 20 percent chance of showers in the
morning. Patchy smoke in the afternoon. Highs in the lower 70s.
Variable winds up to 10 mph becoming southwest 15 to 20 mph in
the afternoon. Waves around 1 foot...locally up to 2 feet. 
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s. Southwest
winds around 15 mph in the evening becoming light. Waves around
1 foot...locally up to 2 feet. 
.MONDAY...Sunny. Highs in the mid 70s. Variable winds up to
10 mph. Waves less than 1 foot.