, °F

Personalized Forecasts

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    My Recent Locations

    • Today

      May 25

      64° /54°
      Mainly cloudy, a thunderstorm
      • Poor
      • for stargazing
      • Cloud Cover: 91%
      • Precip: 41%
      • Hours of Precip: 2
      More
    • Sat

      May 26

      65° /52°F
      Clouds giving way to some sun
      • Poor
      • for stargazing
      • Cloud Cover: 67%
      • Precip: 1%
      • Hours of Precip: 0
    • Sun

      May 27

      74° /54°
      Turning sunny; comfortable
      • Very Good
      • for stargazing
      • Cloud Cover: 11%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Mon

      May 28

      81° /56°
      Sunny; very warm
      • Good
      • for stargazing
      • Cloud Cover: 19%
      • Precip: 0%
      • Hours of Precip: 0
      More
    • Tue

      May 29

      76° /53°
      Plenty of sunshine; pleasant
      • Poor
      • for stargazing
      • Cloud Cover: 46%
      • Precip: 1%
      • Hours of Precip: 0
      More
    Saturday
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    Forecast Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Mostly Cloudy
    Temp (°F) 55° 56° 56° 57° 59° 61° 62° 64°
    RealFeel® 52° 54° 55° 57° 59° 61° 63° 64°
    Wind (mph) 7 WSW 8 WSW 8 WSW 8 WSW 9 WSW 10 WSW 12 WSW 12 WSW
    precip
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    Rain
    8%
    1%
    1%
    1%
    1%
    1%
    1%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    UV Index 0 1 1 2 3 3 3 3
    Cloud Cover 93% 90% 85% 81% 83% 89% 94% 88%
    Humidity 86% 85% 83% 78% 75% 72% 66% 63%
    Dew Point 50° 51° 51° 51° 51° 52° 51° 51°
    Visibility 10 mi 10 mi 10 mi 10 mi 10 mi 10 mi 10 mi 10 mi
    Temp °F
    7am
    8am
    9am
    10am
    11am
    12pm
    1pm
    2pm
    65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 5/26/2017
    High 65° 73° N/A 67°
    Low 52° 52° N/A 56°

    Sunrise/Sunset

    • Sunrise: 5:51 AM
    • Sunset: 8:20 PM
    • Duration: 14:29 hr

    Moonrise/Moonset

    • Moonrise: 5:39 PM
    • Moonset: 4:59 AM
    • Duration: 11:20 hr
    Astronomy

    Solunar Information for Castro Valley, CA

    Tue, May 29
    Full
    Wed, Jun 6
    Last
    Wed, Jun 13
    New
    Wed, Jun 20
    First

    Sat. Stargazing