• Today

    Jul 11

    72°Lo 56°

    Decreasing clouds

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      76°
    • Wind
      Speed
      9 mph
  • Sat

    Jul 12

    70°Lo 55°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      8 mph
    more
  • Sun

    Jul 13

    72°Lo 56°

    Sunshine and patchy clouds

    Poor for home energy
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      8 mph
    more
  • Mon

    Jul 14

    78°Lo 60°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      6 mph
    more
  • Tue

    Jul 15

    78°Lo 60°

    Sunshine and patchy clouds

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      7 mph
    more
Next Previous
Hi 72° RealFeel® 76° Precipitation 2%

Day

N

E

S

W

  • W 9 mph
  • Gusts: 14 mph

After a cloudy start, sunshine returns

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 0%
  • 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® 53° Precipitation 0%

Night

N

E

S

W

  • W 5 mph
  • Gusts: 12 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 11

more Historical Weather Data >
  Today Normal Record 7/11/2013
High 72° N/A N/A 71°
Low 56° N/A N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:56 AM with 14:36 of sunlight, then sets at 8:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:48 PM with 10:32 of moolight, then sets at 6:20 AM

Top Story

Castro Valley Weather Report

San Francisco: Partially Sunny Skies, Rise in Temperature Ahead

July 11, 2014; 4:49 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 >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index