, °F

Personalized Forecasts

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    My Recent Locations

    • Today

      Sep 24

      85° /56°F
      Warmer with plenty of sun
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 86°
      • UV: 5 - High
      • Cloud Cover: 2%
    • Sun

      Sep 25

      95° /60°
      Warmer with plenty of sun
      • Neutral
      • weather for migraines
      • Hi RealFeel: 97°
      • UV: 5 - High
      • Cloud Cover: 0%
      More
    • Mon

      Sep 26

      96° /58°
      Scorching sunshine and hot
      • Neutral
      • weather for migraines
      • Hi RealFeel: 99°
      • UV: 5 - High
      • Cloud Cover: 0%
      More
    • Tue

      Sep 27

      86° /54°
      Mostly sunny and very warm
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 90°
      • UV: 4 - Moderate
      • Cloud Cover: 18%
      More
    • Wed

      Sep 28

      77° /53°
      Clouds breaking for sun
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 80°
      • UV: 4 - Moderate
      • Cloud Cover: 52%
      More
    Saturday
    5pm
    6pm
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    10pm
    11pm
    12am
    Forecast Sunny Sunny Sunny Clear Clear Clear Clear Clear
    Temp (°F) 83° 80° 75° 70° 67° 65° 63° 62°
    RealFeel® 81° 77° 72° 68° 65° 63° 64° 62°
    Wind (mph) 10 NW 8 NW 7 WNW 4 W 4 WSW 4 SW 2 SSW 2 SSW
    precip
    5pm
    6pm
    7pm
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    11pm
    12am
    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
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    UV Index 1 0 0 0 0 0 0 0
    Cloud Cover 0% 0% 0% 0% 1% 2% 0% 0%
    Humidity 38% 44% 54% 58% 63% 70% 71% 70%
    Dew Point 55° 56° 57° 55° 54° 55° 54° 52°
    Temp °F
    5pm
    6pm
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    8pm
    9pm
    10pm
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    85° 80° 75° 70° 65° 60°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/24/2015
    High 85° 77° N/A 91°
    Low 56° 55° N/A 59°

    Sunrise/Sunset

    • Sunrise: 6:59 AM
    • Sunset: 7:01 PM
    • Duration: 12:02 hr

    Moonrise/Moonset

    • Moonrise: 12:52 AM
    • Moonset: 3:18 PM
    • Duration: 14:26 hr
    Astronomy

    Castro Valley Weather Report

    Northern California towns in danger of running out of water for 3rd year in a row

    September 24, 2016; 11:51 AM ET

    For the third year in a row, some communities in northern California may run out of water due to the extreme drought conditions gripping the state. More >

    Sat. Migraine Headache

    Sat. UV Index