• Today

    Jul 10

    73°Lo 56°

    Partly sunny

    Poor for stargazing
    • Cloud
      Cover
      82%
    • Precip
      6%
    • Hours of Precip
      0
    more
  • Fri

    Jul 11

    71°Lo 56°

    Mostly sunny

    Fair for stargazing
    • Cloud
      Cover
      60%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Sat

    Jul 12

    70°Lo 55°

    Mostly sunny

    Very Good for stargazing
    • Cloud
      Cover
      16%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Sun

    Jul 13

    72°Lo 56°

    Partly sunny

    Very Good for stargazing
    • Cloud
      Cover
      0%
    • Precip
      1%
    • Hours of Precip
      0
  • Mon

    Jul 14

    78°Lo 59°

    Mostly sunny

    Very Good for stargazing
    • Cloud
      Cover
      2%
    • Precip
      0%
    • Hours of Precip
      0
    more
Next Previous
Hi 72° RealFeel® 74° Precipitation 0%

Day

N

E

S

W

  • WSW 7 mph
  • Gusts: 12 mph

Partly sunny

  • Max UV Index: 9 (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 1%

Night

N

E

S

W

  • WSW 5 mph
  • Gusts: 10 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • 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 13

more Historical Weather Data >
  Today Normal Record 7/13/2013
High 72° N/A N/A 77°
Low 56° N/A N/A 54°

Solunar Information for Castro Valley, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 14:34 of sunlight, then sets at 8:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:26 PM with 11:17 of moolight, then sets at 8:43 AM

Sat, Jul 12
Full
Sat, Jul 19
Last
Sat, Jul 26
New
Mon, Aug 4
First
Top Story

Castro Valley Weather Report

San Francisco: Partially Sunny Skies, Rise in Temperature Ahead

July 10, 2014; 1:47 PM 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 >

Lunar Reconnaissance Orbiter Studies Moon

Jul 6, 2014; 8:00 AM ET We now know the topographical structure of the moon better than our own planet thanks to LRO.

Sun. Stargazing