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City of Castle Rock, WashingtonCastle Rock, WA 7-Day Night Weather Forecast
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Castle Rock, WA Weather Forecast
Castle Rock, WA Weather Forecast Date: 1127 PM PDT Fri Sep 04 2026
The area/counties/county of: Cowlitz County Lowlands, including the cities of: Kelso, Longview, Castle Rock, Kalama, and Woodland.or toggle through each period.
Overnight... Partly cloudy. Patchy fog. Lows in the lower 50s. Light and variable winds.
Saturday... Partly sunny. Patchy fog in the morning. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Light and variable winds, becoming light in the afternoon. Chance of precipitation 20%.
Saturday Night... Mostly cloudy in the evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Winds light.
Sunday... Patchy fog in the morning. Partly sunny. Highs in the lower 70s. Winds light.
Sunday Night... Partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Winds light.
Labor Day... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s.
Monday Night... Mostly clear in the evening, then becoming partly cloudy. Patchy fog. Lows in the lower 50s.
Tuesday... Mostly cloudy in the morning, then clearing. Highs in the mid 70s.
Tuesday Night... Mostly clear. Lows in the mid 50s.
Wednesday... Sunny. Highs in the mid 80s.
Wednesday Night... Mostly clear. Lows in the upper 50s.
Thursday... Mostly sunny. Highs around 80.
Thursday Night... Partly cloudy. Lows in the mid 50s.
POP = Probability of Precipitation
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