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    6 - 10 of 90 days | All 90 days
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    • Fri

      Sep 30

      70° /53°
      Plenty of sunshine, but cool
      More
    • Sat

      Oct 1

      70° /54°
      Plenty of sunshine
      More
    • Sun

      Oct 2

      69° /58°
      Mostly sunny
      More
    • Mon

      Oct 3

      77° /54°
      Partial sunshine
      More
    • Tue

      Oct 4

      85° /55°F
      Sunshine and very warm
    70°/54° RealFeel® 73°/52°
    Cloudy
    • 7 mph
    • Precipitation: 16%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 58%
    • Cloud Cover: 83%
    • Dew Point: 46° F
    • Visibility: 10 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/4/2015
    High 85° 76° N/A 75°
    Low 55° 55° N/A 51°

    Sunrise/Sunset

    • Sunrise: 7:07 AM
    • Sunset: 6:46 PM
    • Duration: 11:39 hr

    Moonrise/Moonset

    • Moonrise: 10:23 AM
    • Moonset: 9:11 PM
    • Duration: 10:48 hr
    Astronomy

    Castro Valley Weather Report

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

    September 25, 2016; 3:11 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 >

    ABC 7 San Francisco Headlines

    Suspect in deadly Washington state mall shooting identified

    The suspect in a shooting at a Washington state mall that left five dead and sparked an intensive, nearly 24-hour manhunt is in custody. More

    Suspect involved in Civic Center standoff surrenders to San Francisco police More

    Charlotte police release video of fatal officer-involved shooting of Keith Lamont Scott More