Weather WorldAlta Lake State Park, WA 7-Day Night Weather Forecast
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Alta Lake State Park, WA Weather Forecast
Alta Lake State Park, WA Weather Forecast Date: 350 AM PDT Sat Aug 29 2026
The area/counties/county of: Okanogan Valley, including the cities of: Omak, Okanogan, Brewster, Bridgeport, Oroville, Nespelem, and Tonasket.or toggle through each period.
Today... A chance of rain showers in the morning, then rain showers and a chance of thunderstorms in the afternoon. Areas of smoke in the morning. Haze. Highs in the 60s. Northwest wind 5 to 15 mph in the afternoon. Gusts up to 30 mph. Chance of precipitation near 100%. Rainfall amounts up to a half inch possible, except higher amounts possible in thunderstorms.
Tonight... Mostly cloudy. A chance of rain showers. Haze and areas of smoke. Lows in the mid to upper 40s. Northwest wind 5 to 15 mph with gusts up to 25 mph in the evening, becoming light and variable. Chance of precipitation 50%. Rainfall amounts less than a tenth of an inch.
Sunday... Mostly cloudy in the morning then clearing. Warmer. Highs in the upper 60s to mid 70s.
Sunday Night... Partly cloudy. Lows in the upper 40s to lower 50s.
Monday... Sunny, warmer. Highs in the mid 70s to lower 80s.
Monday Night... Mostly cloudy. Lows in the lower to mid 50s. Highs in the upper 70s to mid 80s.
Tuesday... Mostly cloudy. Lows in the lower to mid 50s. Highs in the upper 70s to mid 80s.
Tuesday Night... Mostly cloudy with a 20% chance of rain showers. Lows in the lower to mid 50s.
Wednesday... Not as warm. Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 60s to lower 70s. Chance of precipitation 50%.
Wednesday Night... Mostly cloudy with a 50% chance of rain showers. Lows in the upper 40s to mid 50s. Highs in the mid 60s to lower 70s.
Thursday... Mostly cloudy with a 50% chance of rain showers. Lows in the upper 40s to mid 50s. Highs in the mid 60s to lower 70s.
POP = Probability of Precipitation
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