, °F

Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Today

      Jan 23

      53° /42°F
      A couple of thunderstorms
      • Poor
      • for stargazing
      • Cloud Cover: 85%
      • Precip: 69%
      • Hours of Precip: 7
    • Tue

      Jan 24

      55° /38°
      Clouds giving way to some sun
      • Good
      • for stargazing
      • Cloud Cover: 25%
      • Precip: 5%
      • Hours of Precip: 0.5
      More
    • Wed

      Jan 25

      56° /43°
      Sun and some clouds
      • Poor
      • for stargazing
      • Cloud Cover: 80%
      • Precip: 40%
      • Hours of Precip: 1
      More
    • Thu

      Jan 26

      55° /37°
      Chance of a p.m. shower
      • Good
      • for stargazing
      • Cloud Cover: 26%
      • Precip: 7%
      • Hours of Precip: 0.5
      More
    • Fri

      Jan 27

      58° /37°
      Plenty of sunshine
      • Very Good
      • for stargazing
      • Cloud Cover: 15%
      • Precip: 0%
      • Hours of Precip: 0
      More
    Monday
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    Forecast Cloudy Cloudy Cloudy Cloudy Showers Cloudy Showers Cloudy
    Temp (°F) 51° 49° 47° 46° 46° 46° 45° 45°
    RealFeel® 48° 46° 45° 43° 40° 42° 39° 41°
    Wind (mph) 7 SSW 6 SSW 6 SSW 7 SSW 7 S 7 SSE 7 SSE 7 SSE
    precip
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    Rain
    47%
    43%
    43%
    47%
    51%
    43%
    51%
    43%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 96% 90% 97% 96% 95% 94% 95% 94%
    Humidity 74% 78% 78% 78% 80% 80% 80% 83%
    Dew Point 43° 42° 41° 40° 40° 40° 40° 40°
    Temp °F
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    55° 50° 45°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 1/23/2016
    High 53° 58° N/A 57°
    Low 42° 43° N/A 51°

    Sunrise/Sunset

    • Sunrise: 7:19 AM
    • Sunset: 5:22 PM
    • Duration: 10:03 hr

    Moonrise/Moonset

    • Moonrise: 3:39 AM
    • Moonset: 2:04 PM
    • Duration: 10:25 hr
    Astronomy

    Solunar Information for Castro Valley, CA

    Sat, Jan 28
    New
    Sat, Feb 4
    First
    Sat, Feb 11
    Full
    Sat, Feb 18
    Last

    Mon. Stargazing