10-Day Weather Forecast - Castro Valley, CA

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  • 66|48°F
    Sunny

    Today

    66°F

    Sunny breezy. Highs in the mid 60s to lower 70s. West winds 10 to 20 mph increasing to 20 to 30 mph in the afternoon.

    Tonight

    48°F

    Mostly clear. Breezy. Lows around 50. West winds 20 to 30 mph. . . Becoming southwest 10 to 20 mph after midnight.

    Hourly details
  • 71|51°F
    Sunny

    Day

    71°F

    Sunny. Highs in the upper 60s to mid 70s. Southwest winds around 5 mph increasing to west 10 to 20 mph in the afternoon.

    Night

    51°F

    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s. West winds 10 to 20 mph.

    Hourly details
  • 67|58°F
    Mostly Cloudy

    Day

    67°F

    Mostly cloudy. Highs in the mid 60s to lower 70s. West winds 10 to 20 mph.

    Night

    58°F

    Mostly cloudy. A slight chance of rain. Lows in the upper 50s.

    Hourly details
  • 71|54°F
    Partly Cloudy

    Day

    71°F

    Mostly cloudy in the morning then becoming partly cloudy. Highs near 70.

    Night

    54°F

    Mostly clear. Lows in the lower 50s. Highs in the 70s to lower 80s.

    Hourly details
  • 84|60°F
    Mostly Sunny

    Day

    84°F

    Mostly clear. Lows in the lower 50s. Highs in the 70s to lower 80s.

    Night

    60°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to mid 80s.

    Hourly details
  • 91|60°F
    Sunny

    Day

    91°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to mid 80s.

    Night

    60°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to mid 80s.

    Hourly details
  • 89|59°F
    Sunny

    Day

    89°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to mid 80s.

    Night

    59°F

    Clear. Low temperature around 59F. Dew point will be around 48F with an average humidity of 56%. Winds will be 8 mph from the W.

  • 89|62°F
    Mostly Sunny

    Day

    89°F

    Mostly sunny. High temperature around 89F. Dew point will be around 54F with an average humidity of 40%. Winds will be 9 mph from the W.

    Night

    62°F

    Clear. Low temperature around 62F. Dew point will be around 51F with an average humidity of 54%. Winds will be 7 mph from the SW.

  • 86|60°F
    Sunny

    Day

    86°F

    Sunny. High temperature around 86F. Dew point will be around 53F with an average humidity of 40%. Winds will be 9 mph from the W.

    Night

    60°F

    Clear. Low temperature around 60F. Dew point will be around 51F with an average humidity of 57%. Winds will be 8 mph from the SW.

  • 85|59°F
    Sunny

    Day

    85°F

    Sunny. High temperature around 85F. Dew point will be around 54F with an average humidity of 43%. Winds will be 9 mph from the W.

    Night

    59°F

    Clear. Low temperature around 59F. Dew point will be around 53F with an average humidity of 64%. Winds will be 9 mph from the SW.