• Early AM

    May 2

    Lo 51°

    Cloudy

    Sinus Headache Weather
    • Hi
      RealFeel
      85°
    • UV
      7 - Very High
    • Cloud
      Cover
      71%
    more
  • Today

    May 2

    76°Lo 51°

    Low clouds, then sun

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      81°
    • UV
      7 - Very High
    • Cloud
      Cover
      70%
  • Tue

    May 3

    71°Lo 54°

    Beautiful with periods of sun

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      75°
    • UV
      5 - High
    • Cloud
      Cover
      77%
    more
  • Wed

    May 4

    65°Lo 52°

    Considerable cloudiness

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      68°
    • UV
      5 - High
    • Cloud
      Cover
      79%
    more
  • Thu

    May 5

    63°Lo 49°

    An afternoon shower

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      68°
    • UV
      7 - Very High
    • Cloud
      Cover
      92%
    more
Next Previous
Next 8 hours >
  Mon
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Partly Cloudy
Mostly Clear
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 58° 56° 54° 53° 51° 52° 53° 54°
RealFeel® 57° 55° 54° 53° 51° 53° 53° 55°
Humidity 71% 78% 82% 84% 89% 85% 83% 78%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
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Snow
 
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Ice
 
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  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 6 NNW 6 NNW 5 NW 4 WNW 4 WSW 4 SW 4 SW 4 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 39% 25% 95% 95% 95% 95% 95% 96%
Dew Point 49° 49° 49° 48° 48° 48° 48° 47°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - May 2

more Historical Weather Data >
  Today Normal Record 5/2/2015
High 76° 69° N/A 72°
Low 51° 50° N/A 53°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 13:47 of sunlight, then sets at 7:59 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:58 AM with 11:22 of moolight, then sets at 2:20 PM

Castro Valley Weather Report

San Francisco: Rain showers may dampen the Bay Area for midweek

May 2, 2016; 12:35 AM ET

Dry conditions will dominate the region through early this week in the Bay Area before rain tries to return for the middle of the week. more >

Mon. Sinus Headache

Mon. UV Index