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Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Tonight

      Sep 20

      55° Lo F
      Becoming clear
      • Stargazing
      • Weather
      • Cloud Cover: 47%
      • Precip: 3%
      • Hours of Precip: 0
    • Thu

      Sep 21

      65° /63°
      Mostly sunny and beautiful
      • Very Good
      • for stargazing
      • Cloud Cover: 25%
      • Precip: 2%
      • Hours of Precip: 0
      More
    • Fri

      Sep 22

      71° /52°
      Plenty of sun, but cool
      • Excellent
      • for stargazing
      • Cloud Cover: 1%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Sat

      Sep 23

      77° /52°
      Beautiful with plenty of sun
      • Excellent
      • for stargazing
      • Cloud Cover: 1%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Sun

      Sep 24

      80° /53°
      Sunny and delightful
      • Very Good
      • for stargazing
      • Cloud Cover: 29%
      • Precip: 0%
      • Hours of Precip: 0
      More
    Wednesday
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    Forecast Partly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Clear
    Temp (°F) 64° 64° 62° 62° 62° 61° 60° 59°
    RealFeel® 61° 61° 59° 59° 58° 57° 57° 56°
    Wind (mph) 12 W 10 W 10 W 10 W 9 W 9 W 8 W 8 W
    precip
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    Rain
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 70% 70% 70% 70% 70% 70% 70% 25%
    Humidity 67% 67% 70% 71% 70% 70% 71% 69%
    Dew Point 53° 53° 53° 53° 52° 51° 50° 49°
    Temp °F
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/20/2016
    High 71° 78° N/A 78°
    Low 55° 56° N/A 55°

    Sunrise/Sunset

    • Sunrise: 6:54 AM
    • Sunset: 7:09 PM
    • Duration: 12:15 hr

    Moonrise/Moonset

    • Moonrise: 7:18 AM
    • Moonset: 7:46 PM
    • Duration: 12:28 hr
    Astronomy

    Solunar Information for Castro Valley, CA

    Thu, Sep 28
    First
    Thu, Oct 5
    Full
    Thu, Oct 12
    Last
    Thu, Oct 19
    New

    Wed. Stargazing