SXUS45 KMSO 052330
RECGPI

Recreation Forecast for Flathead Lake
National Weather Service Missoula MT
505 PM MDT Sat Sep 5 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...A chance of showers and a slight chance of
thunderstorms in the evening, then showers likely and a slight
chance of thunderstorms after midnight. Lows in the mid 50s.
Variable winds up to 10 mph. Chance of precipitation 70 percent.
Waves less than 1 foot.
.SUNDAY...Partly sunny. A chance of rain in the morning, then a
slight chance of thunderstorms in the afternoon. Some
thunderstorms may produce strong gusty winds, small hail, and
heavy rainfall in the afternoon. Highs in the mid 60s. Variable
winds up to 10 mph. Chance of precipitation 50 percent. Waves
less than 1 foot.
.SUNDAY NIGHT...A chance of showers and a slight chance of
thunderstorms in the evening, then rain likely after midnight.
Some thunderstorms may produce strong gusty winds, small hail,
and heavy rainfall in the evening. Lows in the lower 50s.
Variable winds up to 10 mph. Chance of precipitation 70 percent.
Waves less than 1 foot.
.Labor Day...Cooler. Rain in the morning, then showers and a
chance of thunderstorms in the afternoon. Highs in the mid 50s.
Variable winds up to 10 mph. Chance of precipitation near
100 percent. Waves less than 1 foot.