• Tonight

    Sep 2

    Lo 59°

    Increasing cloudiness

    Outdoor Barbecue Weather
    • Precip
      2%
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      12 mph
    more
  • Thu

    Sep 3

    72°Lo 58°

    Low clouds, then sunshine

    Very Good for an outdoor bbq
    • Precip
      3%
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      15 mph
  • Fri

    Sep 4

    71°Lo 54°

    Areas of low clouds, then sun

    Very Good for an outdoor bbq
    • Precip
      8%
    • Hi
      RealFeel
      71°
    • Wind
      Speed
      17 mph
    more
  • Sat

    Sep 5

    77°Lo 55°

    Low clouds, then sunshine

    Excellent for an outdoor bbq
    • Precip
      5%
    • Hi
      RealFeel
      80°
    • Wind
      Speed
      8 mph
    more
  • Sun

    Sep 6

    84°Lo 55°

    Plenty of sun

    Excellent for an outdoor bbq
    • Precip
      1%
    • Hi
      RealFeel
      88°
    • Wind
      Speed
      8 mph
    more
Next Previous
Low clouds 70° Lo 61° RealFeel® 71° / 57°

N

E

S

W

  • Precipitation: 1%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 71%
  • Cloud Cover: 95%
  • Dew Point: 55° F
  • Visibility: 5 mi
14 mph

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 72° N/A N/A 76°
Low 58° N/A N/A 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:55 of sunlight, then sets at 7:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:11 PM with 14:10 of moolight, then sets at 1:21 PM

Castro Valley Weather Report

San Francisco: Sunny Skies, Pleasant Conditions to Last Into Labor Day Weekend

September 2, 2015; 3:20 PM ET

Sunny skies and seasonable conditions will follow low clouds each day through Saturday in the Bay Area. 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