• Today

    May 1

    81°Lo 51°

    Sunshine and warmer

    Excellent for an outdoor bbq
    • Precip
      7%
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      7 mph
  • Mon

    May 2

    76°Lo 51°

    Low clouds, then sun

    Excellent for an outdoor bbq
    • Precip
      7%
    • Hi
      RealFeel
      81°
    • Wind
      Speed
      7 mph
    more
  • Tue

    May 3

    71°Lo 54°

    Beautiful with periods of sun

    Excellent for an outdoor bbq
    • Precip
      14%
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      7 mph
    more
  • Wed

    May 4

    65°Lo 52°

    Considerable cloudiness

    Very Good for an outdoor bbq
    • Precip
      12%
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      12 mph
    more
  • Thu

    May 5

    63°Lo 49°

    An afternoon shower in spots

    Good for an outdoor bbq
    • Precip
      40%
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      10 mph
    more
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Temp (°F)
RealFeel®
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Wind (mph) 0 0 0 0 0 0 0 0
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 0% 0% 0% 0% 0% 0% 0% 0%
Dew Point
Middle Grid line 5 F Middle Grid line 0 F Middle Grid line -5 F

Temperature History - May 1

more Historical Weather Data >
  Today Normal Record 5/1/2015
High 81° 69° N/A 81°
Low 51° 49° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 13:47 of sunlight, then sets at 7:59 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:58 AM with 11:22 of moolight, then sets at 2:20 PM

Castro Valley Weather Report

San Francisco: Rain showers may dampen the Bay Area for midweek

May 1, 2016; 4:07 PM ET

Dry conditions will dominate the region through early this week in the Bay Area before rain tries to return for the middle of the week. 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.

Sun. Outdoor Entertaining

Sun. Wind Maps

Sun. UV Index