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  • Mon

    Aug 1

    Areas of fog, then sun 80°Lo 58°
    more
  • Tue

    Aug 2

    Mostly sunny and nice 87°Lo 55°
  • Wed

    Aug 3

    Mostly sunny 79°Lo 56°
    more
  • Thu

    Aug 4

    Sunshine 80°Lo 60°
    more
  • Fri

    Aug 5

    Mostly sunny 74°Lo 59°
    more
Mainly clear 59° Lo 56° RealFeel® 60° / 57°

N

E

S

W

  • Precipitation: 0%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 90%
  • Cloud Cover: 22%
  • Dew Point: 55° F
  • Visibility: 10 mi
4 mph

Temperature History - Aug 2

more Historical Weather Data >
  Today Normal Record 8/2/2015
High 87° 78° N/A 75°
Low 55° 57° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:14 AM with 14:01 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:06 AM with 14:03 of moolight, then sets at 8:09 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; 4:34 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