, °F

Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Today

      Apr 24

      63° /51°F
      Mostly cloudy
      • Poor
      • for stargazing
      • Cloud Cover: 91%
      • Precip: 20%
      • Hours of Precip: 0
    • Tue

      Apr 25

      67° /54°
      Mainly cloudy
      • Poor
      • for stargazing
      • Cloud Cover: 93%
      • Precip: 8%
      • Hours of Precip: 0
      More
    • Wed

      Apr 26

      67° /53°
      Rather cloudy
      • Good
      • for stargazing
      • Cloud Cover: 45%
      • Precip: 2%
      • Hours of Precip: 0
      More
    • Thu

      Apr 27

      69° /49°
      Periods of clouds and sun
      • Good
      • for stargazing
      • Cloud Cover: 50%
      • Precip: 3%
      • Hours of Precip: 0
      More
    • Fri

      Apr 28

      70° /50°
      Mostly sunny and pleasant
      • Excellent
      • for stargazing
      • Cloud Cover: 0%
      • Precip: 1%
      • Hours of Precip: 0
      More

    Day

    63°Hi RealFeel® 62° Precipitation 25%
    Mostly cloudy
    • W 12 mph
    • Gusts: 17 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    51°Lo RealFeel® 49° Precipitation 20%
    Mostly cloudy
    • W 7 mph
    • Gusts: 15 mph
    • Max UV Index: N/A
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 4/24/2016
    High 63° 68° N/A 66°
    Low 51° 49° N/A 49°

    Sunrise/Sunset

    • Sunrise: 6:21 AM
    • Sunset: 7:52 PM
    • Duration: 13:31 hr

    Moonrise/Moonset

    • Moonrise: 5:29 AM
    • Moonset: 6:02 PM
    • Duration: 12:33 hr
    Astronomy

    Solunar Information for Castro Valley, CA

    Wed, Apr 26
    New
    Wed, May 3
    First
    Wed, May 10
    Full
    Fri, May 19
    Last

    Mon. Stargazing