• Today

    Apr 1

    65°Lo 47°

    Sunny; breezy this afternoon

    Very Good for an outdoor bbq
    • Precip
      5%
    • Hi
      RealFeel
      68°
    • Wind
      Gust
      23 mph
    more
  • Thu

    Apr 2

    69°Lo 45°

    Plenty of sunshine

    Very Good for an outdoor bbq
    • Precip
      4%
    • Hi
      RealFeel
      71°
    • Wind
      Gust
      22 mph
  • Fri

    Apr 3

    67°Lo 44°

    Sunny and pleasant

    Very Good for an outdoor bbq
    • Precip
      3%
    • Hi
      RealFeel
      70°
    • Wind
      Gust
      17 mph
    more
  • Sat

    Apr 4

    64°Lo 47°

    Partly sunny

    Good for an outdoor bbq
    • Precip
      4%
    • Hi
      RealFeel
      64°
    • Wind
      Gust
      27 mph
    more
  • Sun

    Apr 5

    60°Lo 45°

    Partly sunny, showers around

    Poor for an outdoor bbq
    • Precip
      60%
    • Hi
      RealFeel
      58°
    • Wind
      Gust
      25 mph
    more
Next Previous
Hi 69° RealFeel® 71° Precipitation 4%

Day

N

E

S

W

  • W 12 mph
  • Gusts: 22 mph

Plenty of sunshine

  • Max UV Index: 7 (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 45° RealFeel® 46° Precipitation 4%

Night

N

E

S

W

  • ENE 4 mph
  • Gusts: 13 mph

Clear and chilly

  • 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 - Apr 2

more Historical Weather Data >
  Today Normal Record 4/2/2014
High 69° N/A N/A 51°
Low 45° N/A N/A 40°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:52 AM with 12:40 of sunlight, then sets at 7:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:12 PM with 12:14 of moolight, then sets at 6:26 AM

Castro Valley Weather Report

San Francisco: Dry Weather, Sunshine to Persist Into Holiday Weekend

April 1, 2015; 6:23 AM ET

Residents across the Bay area can expect sunshine and dry weather through the holiday weekend. 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.

Thu. Outdoor Entertaining

Thu. Wind Maps

Thu. UV Index