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Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Early AM

      Sep 26

      56° Lo
      Clear
      • Stargazing
      • Weather
      • Cloud Cover: 18%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Today

      Sep 26

      90° /60°F
      Sunny and very warm
      • Excellent
      • for stargazing
      • Cloud Cover: 0%
      • Precip: 0%
      • Hours of Precip: 0
    • Wed

      Sep 27

      90° /59°
      Sunny and very warm
      • Excellent
      • for stargazing
      • Cloud Cover: 7%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Thu

      Sep 28

      86° /56°
      Plenty of sunshine
      • Good
      • for stargazing
      • Cloud Cover: 31%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Fri

      Sep 29

      74° /59°
      Sunshine and not as warm
      • Excellent
      • for stargazing
      • Cloud Cover: 24%
      • Precip: 2%
      • Hours of Precip: 0
      More
    Tuesday
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    Forecast Sunny Clear Clear Clear Clear Clear Clear Clear
    Temp (°F) 86° 80° 76° 72° 70° 69° 68° 67°
    RealFeel® 85° 77° 74° 70° 68° 67° 66° 65°
    Wind (mph) 7 NNW 6 NW 5 W 5 WSW 5 SW 5 SSW 5 SSW 5 S
    precip
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    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
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    UV Index 1 0 0 0 0 0 0 0
    Cloud Cover 0% 0% 0% 0% 0% 0% 0% 0%
    Humidity 33% 41% 43% 47% 53% 54% 53% 53%
    Dew Point 53° 54° 52° 51° 52° 52° 50° 50°
    Temp °F
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    90° 85° 80° 75° 70° 65°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2016
    High 90° 77° N/A 87°
    Low 60° 55° N/A 66°

    Sunrise/Sunset

    • Sunrise: 6:59 AM
    • Sunset: 6:59 PM
    • Duration: 12:00 hr

    Moonrise/Moonset

    • Moonrise: 1:03 PM
    • Moonset: 11:20 PM
    • Duration: 10:17 hr
    Astronomy

    Solunar Information for Castro Valley, CA

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

    Tue. Stargazing