• Today

    Sep 20

    76°Lo 62°

    Abundant sunshine

    Fair for stargazing
    • Cloud
      Cover
      65%
    • Precip
      5%
    • Hours of Precip
      0
  • Sun

    Sep 21

    74°Lo 61°

    Plenty of sunshine

    Very Good for stargazing
    • Cloud
      Cover
      23%
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Mon

    Sep 22

    76°Lo 59°

    Areas of low clouds, then sun

    Excellent for stargazing
    • Cloud
      Cover
      13%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Tue

    Sep 23

    78°Lo 61°

    Areas of low clouds, then sun

    Excellent for stargazing
    • Cloud
      Cover
      20%
    • Precip
      3%
    • Hours of Precip
      0
    more
  • Wed

    Sep 24

    77°Lo 64°

    Considerable cloudiness

    Very Good for stargazing
    • Cloud
      Cover
      25%
    • Precip
      55%
    • Hours of Precip
      1
    more
Next Previous
Hi 76° RealFeel® 78° Precipitation 4%

Day

N

E

S

W

  • WNW 7 mph
  • Gusts: 14 mph

Abundant sunshine

  • Max UV Index: 6 (High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 62° RealFeel® 60° Precipitation 5%

Night

N

E

S

W

  • NW 4 mph
  • Gusts: 9 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 76° N/A N/A 72°
Low 62° N/A N/A 57°

Solunar Information for Castro Valley, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:54 AM with 12:15 of sunlight, then sets at 7:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:42 AM with 13:30 of moolight, then sets at 5:12 PM

Wed, Sep 24
New
Wed, Oct 1
First
Wed, Oct 8
Full
Wed, Oct 15
Last
Top Story

Castro Valley Weather Report

Dry, Sunny Weather Continues for San Francisco

September 20, 2014; 5:03 AM ET

Sunny skies will bathe the Bay Area for the new week. more >

Lunar Reconnaissance Orbiter Studies Moon

Sep 14, 2014; 5:00 AM ET We now know the topographical structure of the moon better than our own planet thanks to LRO.

Sat. Stargazing