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Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Early AM

      Feb 27

      42° Lo
      A brief shower or two
      • Stargazing
      • Weather
      • Cloud Cover: 89%
      • Precip: 61%
      • Hours of Precip: 3
      More
    • Today

      Feb 27

      57° /40°
      Mostly cloudy, a shower; cool
      • Good
      • for stargazing
      • Cloud Cover: 26%
      • Precip: 5%
      • Hours of Precip: 1
      More
    • Tue

      Feb 28

      59° /40°F
      Mostly sunny and chilly
      • Excellent
      • for stargazing
      • Cloud Cover: 2%
      • Precip: 1%
      • Hours of Precip: 0
    • Wed

      Mar 1

      60° /41°
      Plenty of sunshine
      • Excellent
      • for stargazing
      • Cloud Cover: 3%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Thu

      Mar 2

      61° /42°
      Mostly sunny
      • Good
      • for stargazing
      • Cloud Cover: 28%
      • Precip: 3%
      • Hours of Precip: 0
      More
    59°/54° RealFeel® 67°/54°
    Mostly sunny
    • 5 mph
    • Precipitation: 0%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 46%
    • Cloud Cover: 11%
    • Dew Point: 36° F
    • Visibility: 10 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 2/28/2016
    High 59° 63° N/A 67°
    Low 40° 46° N/A 45°

    Sunrise/Sunset

    • Sunrise: 6:41 AM
    • Sunset: 6:01 PM
    • Duration: 11:20 hr

    Moonrise/Moonset

    • Moonrise: 8:03 AM
    • Moonset: 8:35 PM
    • Duration: 12:32 hr
    Astronomy

    Solunar Information for Castro Valley, CA

    Sun, Mar 5
    First
    Sun, Mar 12
    Full
    Mon, Mar 20
    Last
    Tue, Mar 28
    New

    Tue. Stargazing