10-Day Weather Forecast - Castro Valley, CA

Sunny. Highs in the upper 50s. Northeast winds 5 to 15 mph.

Mostly clear. Lows near 40. Northeast winds 5 to 10 mph.

Partly cloudy. Highs in the upper 50s. Northeast winds 5 to 10 mph.

Mostly cloudy. A slight chance of rain after midnight. Lows in the mid 40s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

Rain likely. Highs in the mid 50s.

Rain likely. Lows in the upper 40s. Highs in the upper 50s.

Rain likely. Lows in the upper 40s. Highs in the upper 50s.

Rain likely. Lows in the lower 50s.

Rain likely. Highs in the upper 50s. Lows around 50.

Rain likely. Highs in the upper 50s. Lows around 50.

Rain likely. Highs in the upper 50s. Lows around 50.

Rain likely. Highs in the upper 50s. Lows around 50.

Rain likely. Highs in the upper 50s. Lows around 50.

Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 46F. Dew point will be around 44F with an average humidity of 89%. Winds will be 6 mph from the SE.

Partly cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 56F. Dew point will be around 46F with an average humidity of 80%. Winds will be 5 mph from the SE.

Mostly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 45F. Dew point will be around 44F with an average humidity of 88%. Winds will be 3 mph from the E.

Partly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 55F. Dew point will be around 46F with an average humidity of 81%. Winds will be 3 mph from the E.

Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 44F. Dew point will be around 43F with an average humidity of 88%. Winds will be 2 mph from the E.