• Mon

    Apr 21

    64°Lo 52°

    Clouds and sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      64°
    • UV
      6 - High
    • Cloud
      Cover
      67%
  • Tue

    Apr 22

    59°Lo 50°

    Mostly cloudy, a shower; cool

    Beneficial weather for migraines
    • Hi
      RealFeel
      59°
    • UV
      6 - High
    • Cloud
      Cover
      76%
    more
  • Wed

    Apr 23

    62°Lo 49°

    Partly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      63°
    • UV
      8 - Very High
    • Cloud
      Cover
      33%
    more
  • Thu

    Apr 24

    66°Lo 51°

    Cloudy with a little rain

    Beneficial weather for migraines
    • Hi
      RealFeel
      67°
    • UV
      5 - Moderate
    • Cloud
      Cover
      67%
    more
  • Fri

    Apr 25

    63°Lo 51°

    A thick cloud cover

    Beneficial weather for migraines
    • Hi
      RealFeel
      64°
    • UV
      5 - Moderate
    • Cloud
      Cover
      99%
    more
Next Previous
Cloudy 60° Lo 55° RealFeel® 54° / 50°

N

E

S

W

  • Precipitation: 12%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 71%
  • Cloud Cover: 96%
  • Dew Point: 48° F
  • Visibility: 10 mi
8 mph

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 64° N/A N/A 80°
Low 52° N/A N/A 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 13:24 of sunlight, then sets at 7:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:23 AM with 10:36 of moolight, then sets at 11:59 AM

Top Story

Castro Valley Weather Report

San Francisco: No Rain in Sight, Morning Clouds to Break for Afternoon Sunshine

April 17, 2014; 4:46 AM ET

For the remainder of the week and into the weekend, morning clouds will give way to mostly sunny skies. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Migraine Headache

Mon. UV Index