• Early AM

    May 4

    Lo 50°

    Cloudy

    Migraine Headache Weather
    • Hi
      RealFeel
      72°
    • UV
      8 - Very High
    • Cloud
      Cover
      86%
    more
  • Today

    May 4

    63°Lo 49°

    Areas of low clouds, then sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      65°
    • UV
      8 - Very High
    • Cloud
      Cover
      51%
    more
  • Tue

    May 5

    64°Lo 48°

    Sunshine and patchy clouds

    Beneficial weather for migraines
    • Hi
      RealFeel
      66°
    • UV
      8 - Very High
    • Cloud
      Cover
      25%
    more
  • Wed

    May 6

    65°Lo 48°

    Sunshine; breezy in the p.m.

    Beneficial weather for migraines
    • Hi
      RealFeel
      69°
    • UV
      8 - Very High
    • Cloud
      Cover
      18%
    more
  • Thu

    May 7

    68°Lo 49°

    Sunshine; breezy in the p.m.

    Neutral weather for migraines
    • Hi
      RealFeel
      70°
    • UV
      8 - Very High
    • Cloud
      Cover
      23%
Next Previous
Mostly cloudy 52° Lo 49° RealFeel® 48° / 45°

N

E

S

W

  • Precipitation: 4%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 86%
  • Cloud Cover: 70%
  • Dew Point: 46° F
  • Visibility: 10 mi
8 mph

Temperature History - May 7

more Historical Weather Data >
  Today Normal Record 5/7/2014
High 68° N/A N/A 65°
Low 49° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:06 AM with 13:58 of sunlight, then sets at 8:04 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:33 PM with 10:26 of moolight, then sets at 9:59 AM

Castro Valley Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 4, 2015; 2:12 AM ET

A pattern of seasonable temperatures will continue through the first part of the new week, with low clouds in the morning and sunny conditions through the afternoon. more >

Thu. Migraine Headache

Thu. UV Index