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  • Today

    Jul 27

    Turning sunny and very warm 88°Lo 58°
    more
  • Thu

    Jul 28

    Mostly sunny and very warm 85°Lo 58°
  • Fri

    Jul 29

    Clouds, then sun 85°Lo 58°
    more
  • Sat

    Jul 30

    Mostly sunny 84°Lo 58°
    more
  • Sun

    Jul 31

    Clouds, then sun 82°Lo 58°
    more
< Previous 8 hours Next 8 hours >
  Thu
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Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Cloudy
Partly Cloudy
Partly Sunny
Sunny
Temp (°F) 59° 59° 58° 60° 63° 67° 70° 75°
RealFeel® 59° 59° 58° 61° 64° 69° 76° 82°
Humidity 82% 83% 86% 77% 75% 68% 59% 55%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
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Snow
 
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Ice
 
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  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 4 WSW 4 WSW 4 WSW 5 WSW 5 WSW 5 WSW 6 W 6 W
UV Index 0 0 0 0 1 2 5 7
Cloud Cover 10% 10% 10% 10% 90% 63% 30% 4%
Dew Point 54° 54° 54° 53° 55° 56° 56° 58°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Jul 28

more Historical Weather Data >
  Today Normal Record 7/28/2015
High 85° 77° N/A 91°
Low 58° 57° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 14:11 of sunlight, then sets at 8:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:31 AM with 14:05 of moolight, then sets at 3:36 PM

Castro Valley Weather Report

Oppressive heat to envelop the western US as weekend highs soar 10 to 15 degrees Fahrenheit above average

July 27, 2016; 7:34 PM ET

Highs will run between 10 and 15 degrees Fahrenheit above average across much of the western United States into the upcoming weekend. more >

ABC 7 San Francisco Headlines

What Bill Clinton revealed about Hillary in his DNC speech

"In the spring of 1971, I met a girl," Bill Clinton said at the top of his speech at the DNC in Philadelphia, where he told the story of how he met then-Hillary Rodham in college, and his plight to convince her to marry him.

Clinton steps into history as 1st woman White House nominee

WATCH: Bernie Sanders gets emotional as brother casts vote at DNC