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Castro Valley/Eden ChamberCastro Valley, CA 7-Day Night Weather Forecast
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Castro Valley, CA Weather Forecast
Castro Valley, CA Weather Forecast Date: 302 AM PDT Wed Sep 30 2026
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Rest of Tonight... Mostly clear. Lows in the upper 50s. South winds 5 to 10 mph.
Wednesday... Sunny. Highs in the 70s to upper 80s. South winds around 5 mph increasing to northwest 10 to 20 mph in the afternoon.
Wednesday Night... Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West winds 5 to 15 mph.
Thursday... Partly cloudy in the morning then becoming sunny. Highs in the 70s to upper 80s. West winds 5 to 10 mph.
Thursday Night... Mostly clear in the evening then becoming partly cloudy. Lows around 60. West winds 5 to 10 mph in the evening...Becoming light.
Friday... Mostly cloudy in the morning then becoming partly cloudy. Highs in the 80s.
Friday Night... Partly cloudy. Lows in the lower 60s. Highs in the 80s.
Saturday... Partly cloudy. Lows in the lower 60s. Highs in the 80s.
Saturday Night... Mostly clear. Lows in the lower 60s. Highs in the 70s to upper 80s.
Sunday... Mostly clear. Lows in the lower 60s. Highs in the 70s to upper 80s.
Monday... Mostly clear. Lows in the lower 60s. Highs in the 70s to upper 80s.
POP = Probability of Precipitation
Castro Valley Radar Loop
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