Weather WorldLake Sylvia State Park, WA 7-Day Night Weather Forecast
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Lake Sylvia State Park, WA Weather Forecast
Lake Sylvia State Park, WA Weather Forecast Date: 236 PM PDT Tue Aug 11 2026
The area/counties/county of: Middle Chehalis River Valley, including the city of Elma.or toggle through each period.
Tonight... Mostly clear in the evening then becoming mostly cloudy. Lows in the mid to upper 50s. West wind around 10 mph in the evening becoming light.
Wednesday... Mostly cloudy in the morning then becoming sunny. Highs in the 70s. Light wind becoming west to 10 mph in the afternoon.
Wednesday Night... Mostly clear in the evening then becoming cloudy. Lows in the lower to mid 50s. Light wind.
Thursday... Cloudy in the morning then becoming mostly sunny. Highs in the 70s. Light wind.
Thursday Night... Mostly clear in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. West wind to 10 mph.
Friday... Cloudy in the morning then becoming mostly sunny. Highs in the mid to upper 70s.
Friday Night... Partly cloudy. Lows in the lower 50s.
Saturday... Mostly cloudy. Highs in the mid 70s to lower 80s.
Saturday Night... Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s.
Sunday... Cloudy in the morning then becoming partly sunny. Highs in the lower to mid 80s.
Sunday Night... Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s.
Monday... Mostly cloudy. A slight chance of rain in the afternoon. Highs near 80.
Monday Night... Mostly cloudy with a slight chance of rain. Lows in the lower to mid 50s.
POP = Probability of Precipitation
Lake Sylvia State Park Radar Loop
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