10-Day Weather Forecast - Castro Valley, CA

As of

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  • 70|58°F
    Partly Cloudy

    Today

    70°F

    Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 70s. Southeast winds 5 to 10 mph.. becoming south 10 to 20 mph in the afternoon.

    Tonight

    58°F

    Partly cloudy in the evening then becoming mostly cloudy. Breezy. A slight chance of rain after midnight. Lows in the mid 50s. South winds 20 to 30 mph..becoming southeast 10 to 20 mph after midnight.

    Hourly details
  • 58|44°F
    Chance of Storms

    Day

    58°F

    Breezy. A chance of showers in the morning. A slight chance of thunderstorms. Showers in the afternoon. Highs in the lower 60s. Southwest winds 20 to 30 mph with gusts to around 45 mph.

    Night

    44°F

    Rain likely in the evening, then a chance of rain after midnight. Lows near 50. Southwest winds 10 to 20 mph.. becoming south 5 to 10 mph after midnight. Chance of rain 70 percent.

    Hourly details
  • 62|50°F
    Partly Cloudy

    Day

    62°F

    Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain in the morning. Highs in the mid 60s. Southeast winds around 5 mph..becoming southwest up to 5 mph in the afternoon. Chance of rain 20 percent.

    Night

    50°F

    Mostly cloudy. Lows near 50.

    Hourly details
  • 60|46°F
    Chance of Rain

    Day

    60°F

    Mostly cloudy. A chance of rain. Highs in the mid 60s.

    Night

    46°F

    Rain. Lows in the upper 40s to mid 50s.

    Hourly details
  • 59|41°F
    Rain

    Day

    59°F

    Rain likely. Highs around 60.

    Night

    41°F

    Mostly cloudy in the evening then becoming partly cloudy. A slight chance of rain. Lows in the mid 40s to lower 50s.

    Hourly details
  • 59|49°F
    Partly Cloudy

    Day

    59°F

    Partly cloudy in the morning then becoming sunny. Patchy fog. Highs in the lower 60s.

    Night

    49°F

    Mostly clear in the evening then becoming partly cloudy. A slight chance of rain. Lows in the mid 40s to lower 50s.

    Hourly details
  • 52|38°F
    Rain

    Day

    52°F

    Rain likely. Highs around 60.

    Night

    38°F

    Mostly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 38F. Dew point will be around 38F with an average humidity of 96%. Winds will be 3 mph from the ESE.

  • 56|37°F
    30% Chance of Rain

    Day

    56°F

    Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 56F. Dew point will be around 46F with an average humidity of 81%. Winds will be 3 mph from the NE.

    Night

    37°F

    Mostly cloudy. Low temperature around 37F. Dew point will be around 38F with an average humidity of 94%. Winds will be 4 mph from the NE.

  • 57|36°F
    Sunny

    Day

    57°F

    Sunny. High temperature around 57F. Dew point will be around 46F with an average humidity of 77%. Winds will be 3 mph from the SSE.

    Night

    36°F

    Mostly clear. Low temperature around 36F. Dew point will be around 36F with an average humidity of 88%. Winds will be 2 mph from the NE.

  • 59|39°F
    Partly Cloudy

    Day

    59°F

    Partly cloudy. High temperature around 59F. Dew point will be around 43F with an average humidity of 62%. Winds will be 2 mph from the NE.

    Night

    39°F

    Partly cloudy. Low temperature around 39F. Dew point will be around 39F with an average humidity of 92%. Winds will be 4 mph from the NE.