• Today

    Jul 12

    71°Lo 56°

    Low clouds, then sunshine

    Excellent for biking
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      14 mph
    more
  • Sun

    Jul 13

    73°Lo 56°

    Mostly sunny

    Excellent for biking
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
  • Mon

    Jul 14

    80°Lo 61°

    Mostly sunny

    Excellent for biking
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      11 mph
    more
  • Tue

    Jul 15

    77°Lo 60°

    Sunshine and patchy clouds

    Excellent for biking
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Wed

    Jul 16

    76°Lo 59°

    Mostly sunny

    Excellent for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
Next Previous
Hi 73° RealFeel® 77° Precipitation 0%

Day

N

E

S

W

  • W 7 mph
  • Gusts: 12 mph

Mostly sunny

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 56° RealFeel® 54° Precipitation 0%

Night

N

E

S

W

  • NW 5 mph
  • Gusts: 10 mph

Mainly clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Jul 13

more Historical Weather Data >
  Today Normal Record 7/13/2013
High 73° N/A N/A 77°
Low 56° N/A N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 14:34 of sunlight, then sets at 8:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:26 PM with 11:17 of moolight, then sets at 8:43 AM

Top Story

Castro Valley Weather Report

San Francisco: Partially Sunny Skies, Rise in Temperature Ahead

July 12, 2014; 3:59 AM ET

San Francisco will see a rise in temperatures over the next several days as partially cloudy skies make way for plenty of sunshine. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.