• Tonight

    Jun 30

    Lo 59°

    Partly cloudy

    Migraine Headache Weather
    • Hi
      RealFeel
      93°
    • UV
      8 - Very High
    • Cloud
      Cover
      36%
    more
  • Wed

    Jul 1

    86°Lo 62°

    Partly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      89°
    • UV
      9 - Very High
    • Cloud
      Cover
      29%
  • Thu

    Jul 2

    81°Lo 61°

    A blend of sun and clouds

    Beneficial weather for migraines
    • Hi
      RealFeel
      83°
    • UV
      7 - High
    • Cloud
      Cover
      69%
    more
  • Fri

    Jul 3

    79°Lo 60°

    Partly sunny and nice

    Beneficial weather for migraines
    • Hi
      RealFeel
      83°
    • UV
      9 - Very High
    • Cloud
      Cover
      26%
    more
  • Sat

    Jul 4

    78°Lo 59°

    Mostly sunny and nice

    Beneficial weather for migraines
    • Hi
      RealFeel
      81°
    • UV
      9 - Very High
    • Cloud
      Cover
      23%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 62° 62° 61° 61° 61° 59° 63° 67°
RealFeel® 62° 62° 61° 61° 61° 59° 65° 68°
Humidity 81% 81% 79% 79% 81% 87% 73% 71%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 4 SW 4 SW 4 SW 4 WSW 4 WSW 4 WSW 4 WSW 4 WSW
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 26% 26% 26% 26% 26% 36% 45% 45%
Dew Point 56° 56° 55° 54° 55° 55° 54° 57°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Jul 1

more Historical Weather Data >
  Today Normal Record 7/1/2014
High 86° N/A N/A 75°
Low 62° N/A N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:50 AM with 14:44 of sunlight, then sets at 8:34 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:11 PM with 10:28 of moolight, then sets at 6:39 AM

Castro Valley Weather Report

San Francisco: Warm, Dry Through the Independence Day Weekend

June 30, 2015; 8:36 PM ET

The San Francisco area will remain dry and warm into the Independence Day weekend. more >

Wed. Migraine Headache

Wed. UV Index