• Today

    Aug 1

    76°Lo 62°

    Low clouds, then some sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      80°
    • UV
      7 - Very High
    • Cloud
      Cover
      47%
  • Sun

    Aug 2

    74°Lo 61°

    Low clouds, then sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      77°
    • UV
      7 - Very High
    • Cloud
      Cover
      58%
    more
  • Mon

    Aug 3

    73°Lo 61°

    Low clouds, then sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      76°
    • UV
      5 - High
    • Cloud
      Cover
      60%
    more
  • Tue

    Aug 4

    73°Lo 58°

    Clouds breaking for sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      75°
    • UV
      7 - Very High
    • Cloud
      Cover
      60%
    more
  • Wed

    Aug 5

    77°Lo 55°

    Low clouds, then some sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      82°
    • UV
      7 - Very High
    • Cloud
      Cover
      60%
    more
Next Previous
Low clouds 73° Lo 64° RealFeel® 79° / 63°

N

E

S

W

  • Precipitation: 0%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 77%
  • Cloud Cover: 66%
  • Dew Point: 60° F
  • Visibility: 8 mi
9 mph

Temperature History - Aug 1

more Historical Weather Data >
  Today Normal Record 8/1/2014
High 76° N/A N/A 83°
Low 62° N/A N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 14:05 of sunlight, then sets at 8:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:10 PM with 11:41 of moolight, then sets at 8:51 AM

Castro Valley Weather Report

San Francisco: Dry Weather Continues in the Bay Area

August 1, 2015; 4:06 PM ET

The only fly in the ointment in the forecast will be low morning clouds which may cause travel delays at San Francisco International Airport. more >

Sat. Migraine Headache

Sat. UV Index