Castro Valley, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Thursday
    Mostly Cloudy
    60°
    Forecast night icon
    Night
    Rain
    47°
    Thursday 3/28
    Day
    60°
    Mostly Cloudy
    Forecast day icon
    Night
    47°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Highs in the lower 60s. West winds 5 to 15 mph.
    Night Details
    Rain likely after midnight. Lows in the upper 40s. West winds 5 to 15 mph. . . Becoming south around 5 mph after midnight.
  • Forecast day icon
    Friday
    Rain
    56°
    Forecast night icon
    Night
    Chance of Storms
    47°
    Friday 3/29
    Day
    56°
    Rain
    Forecast day icon
    Night
    47°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Rain likely in the morning then rain in the afternoon. Highs in the upper 50s. Southeast winds 5 to 15 mph increasing to 15 to 20 mph in the afternoon.
    Night Details
    Showers in the evening. A slight chance of thunderstorms. Showers likely after midnight. Lows in the upper 40s. Southeast winds 10 to 20 mph.
  • Forecast day icon
    Saturday
    70% Chance of Storms
    60°
    Forecast night icon
    Night
    Chance of Rain
    44°
    Saturday 3/30
    Day
    60°
    70% Chance of Storms
    Forecast day icon
    Night
    44°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Rain likely in the morning then showers likely and a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. East winds 5 to 10 mph. Chance of precipitation 70 percent.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. A slight chance of rain. Lows in the upper 40s.
  • Forecast day icon
    Sunday
    Partly Cloudy
    65°
    Forecast night icon
    Night
    Mostly Clear
    46°
    Sunday 3/31
    Day
    65°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 60s.
    Night Details
    Mostly clear. Lows in the upper 40s. Highs in the upper 60s.
  • Forecast day icon
    Monday
    Mostly Sunny
    72°
    Forecast night icon
    Night
    Clear
    49°
    Monday 4/1
    Day
    72°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Lows in the upper 40s. Highs in the upper 60s.
    Night Details
    Clear. Lows in the upper 40s.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    74°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Tuesday 4/2
    Day
    74°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs near 70. Lows in the lower 50s.
    Night Details
    Mostly clear. Highs near 70. Lows in the lower 50s.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    73°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Wednesday 4/3
    Day
    73°
    Partly Cloudy
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Day Details
    Partly cloudy in the morning then becoming sunny. Highs in the mid 60s to lower 70s.
    Night Details
    Mostly clear. Low temperature around 47F. Dew point will be around 46F with an average humidity of 79%. Winds will be 6 mph from the W.
  • Forecast day icon
    Thursday
    Sunny
    65°
    Forecast night icon
    Night
    Clear
    45°
    Thursday 4/4
    Day
    65°
    Sunny
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 65F. Dew point will be around 41F with an average humidity of 54%. Winds will be 8 mph from the NW.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 40F with an average humidity of 68%. Winds will be 5 mph from the NW.
  • Forecast day icon
    Friday
    Sunny
    64°
    Forecast night icon
    Night
    Clear
    45°
    Friday 4/5
    Day
    64°
    Sunny
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 64F. Dew point will be around 40F with an average humidity of 52%. Winds will be 6 mph from the NW.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 43F with an average humidity of 75%. Winds will be 5 mph from the W.
  • Forecast day icon
    Saturday
    Sunny
    62°
    Forecast night icon
    Night
    Clear
    44°
    Saturday 4/6
    Day
    62°
    Sunny
    Forecast day icon
    Night
    44°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 62F. Dew point will be around 43F with an average humidity of 61%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 44F. Dew point will be around 43F with an average humidity of 77%. Winds will be 4 mph from the W.