• Today

    Apr 24

    66°Lo 55°

    Partly sunny

    Excellent for biking
    • Precip
      13%
    • Hours of Precip
      0
    • Wind
      Gust
      15 mph
    more
  • Fri

    Apr 25

    59°Lo 46°

    A couple of thunderstorms

    Fair for biking
    • Precip
      60%
    • Hours of Precip
      2
    • Wind
      Gust
      22 mph
    more
  • Sat

    Apr 26

    61°Lo 51°

    Breezy with clouds and sun

    Very Good for biking
    • Precip
      16%
    • Hours of Precip
      0
    • Wind
      Gust
      21 mph
  • Sun

    Apr 27

    64°Lo 47°

    Times of clouds and sun

    Excellent for biking
    • Precip
      25%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
  • Mon

    Apr 28

    70°Lo 50°

    Mostly sunny

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
Next Previous
Hi 61° RealFeel® 59° Precipitation 16%

Day

N

E

S

W

  • W 13 mph
  • Gusts: 21 mph

Breezy and cool with intervals of clouds and sunshine

  • Max UV Index: 7 (High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 51° RealFeel® 48° Precipitation 30%

Night

N

E

S

W

  • WSW 6 mph
  • Gusts: 14 mph

Considerable cloudiness with a couple of showers possible

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Apr 26

more Historical Weather Data >
  Today Normal Record 4/26/2013
High 61° N/A N/A 68°
Low 51° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:19 AM with 13:35 of sunlight, then sets at 7:54 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:43 AM with 12:48 of moolight, then sets at 5:31 PM

Top Story

Castro Valley Weather Report

San Francisco: Chance of Rain to Return Late Week

April 24, 2014; 3:01 AM ET

After receiving 0.4 of an inch of rain Tuesday, drier weather will linger in the area throughout the week until Friday. 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.