Castro Valley, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    46°
    Tuesday 5/7
    Forecast night icon
    46°
    Clear
    Hourly
    Night Details
    Clear. Lows in the lower 50s. Northwest winds 5 to 15 mph.
  • Forecast day icon
    Wednesday
    Sunny
    80°
    Forecast night icon
    Night
    Clear
    55°
    Wednesday 5/8
    Day
    80°
    Sunny
    Forecast day icon
    Night
    55°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid to upper 70s. North winds 10 to 20 mph.
    Night Details
    Clear. Lows in the mid 50s. North winds 10 to 20 mph.
  • Forecast day icon
    Thursday
    Sunny
    86°
    Forecast night icon
    Night
    Clear
    55°
    Thursday 5/9
    Day
    86°
    Sunny
    Forecast day icon
    Night
    55°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the 80s to lower 90s. Northeast winds 5 to 15 mph.
    Night Details
    Clear. Lows in the upper 50s. West winds 5 to 15 mph in the evening. . . Becoming light.
  • Forecast day icon
    Friday
    Sunny
    81°
    Forecast night icon
    Night
    Clear
    51°
    Friday 5/10
    Day
    81°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s to mid 80s.
    Night Details
    Clear. Lows in the mid 50s. Highs in the 70s to lower 80s.
  • Forecast day icon
    Saturday
    Sunny
    79°
    Forecast night icon
    Night
    Mostly Clear
    50°
    Saturday 5/11
    Day
    79°
    Sunny
    Forecast day icon
    Night
    50°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Clear. Lows in the mid 50s. Highs in the 70s to lower 80s.
    Night Details
    Mostly clear. Lows in the mid 50s. Highs in the 60s to upper 70s.
  • Forecast day icon
    Sunday
    Mostly Sunny
    73°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Sunday 5/12
    Day
    73°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Lows in the mid 50s. Highs in the 60s to upper 70s.
    Night Details
    Mostly clear. Lows in the mid 50s. Highs in the 60s to upper 70s.
  • Forecast day icon
    Monday
    Partly Cloudy
    70°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Monday 5/13
    Day
    70°
    Partly Cloudy
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    74°
    Forecast night icon
    Night
    Clear
    54°
    Tuesday 5/14
    Day
    74°
    Partly Cloudy
    Forecast day icon
    Night
    54°
    Clear
    Forecast night icon
    Day Details
    Partly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s.
    Night Details
    Clear. Low temperature around 54F. Dew point will be around 51F with an average humidity of 76%. Winds will be 6 mph from the W.
  • Forecast day icon
    Wednesday
    Sunny
    82°
    Forecast night icon
    Night
    Clear
    55°
    Wednesday 5/15
    Day
    82°
    Sunny
    Forecast day icon
    Night
    55°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 82F. Dew point will be around 54F with an average humidity of 53%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 55F. Dew point will be around 52F with an average humidity of 70%. Winds will be 6 mph from the W.
  • Forecast day icon
    Thursday
    Sunny
    76°
    Forecast night icon
    Night
    Clear
    52°
    Thursday 5/16
    Day
    76°
    Sunny
    Forecast day icon
    Night
    52°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 76F. Dew point will be around 53F with an average humidity of 54%. Winds will be 7 mph from the W.
    Night Details
    Clear. Low temperature around 52F. Dew point will be around 51F with an average humidity of 77%. Winds will be 7 mph from the SW.
  • Forecast day icon
    Friday
    Sunny
    70°
    Forecast night icon
    Night
    Clear
    50°
    Friday 5/17
    Day
    70°
    Sunny
    Forecast day icon
    Night
    50°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 70F. Dew point will be around 51F with an average humidity of 60%. Winds will be 8 mph from the W.
    Night Details
    Clear. Low temperature around 50F. Dew point will be around 50F with an average humidity of 82%. Winds will be 7 mph from the W.