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519
SXUS45 KMSO 212330
RECGPI

Recreation Forecast for Flathead Lake
National Weather Service Missoula MT
505 PM MDT Thu Aug 21 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...Mostly clear. Lows in the upper 50s. Variable winds up
to 10 mph becoming north around 15 mph after midnight. Waves less
than 1 foot.
.FRIDAY...Sunny. Highs in the upper 70s. Northeast winds around
15 mph with gusts to around 30 mph in the morning becoming light.
Waves around 1 foot...locally up to 2 feet.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. Northeast
winds around 15 mph. Waves less than 1 foot.
.SATURDAY...Sunny. Highs around 80 . Variable winds up to 10 mph.
Waves less than 1 foot.