• Today

    Feb 8

    72°Lo 47°

    Plenty of sunshine

    Beneficial weather for arthritis pain
    • Rain
      0 in
    • Hours of Precip
      0
    • UV
      4 - Moderate
  • Tue

    Feb 9

    71°Lo 47°

    Plenty of sunshine

    Beneficial weather for arthritis pain
    • Rain
      0 in
    • Hours of Precip
      0
    • UV
      4 - Moderate
    more
  • Wed

    Feb 10

    69°Lo 46°

    Partly sunny

    Beneficial weather for arthritis pain
    • Rain
      0 in
    • Hours of Precip
      0
    • UV
      4 - Moderate
    more
  • Thu

    Feb 11

    68°Lo 47°

    Sun and areas of high clouds

    Beneficial weather for arthritis pain
    • Rain
      0 in
    • Hours of Precip
      0
    • UV
      4 - Moderate
    more
  • Fri

    Feb 12

    67°Lo 48°

    Some brightening

    Beneficial weather for arthritis pain
    • Rain
      0 in
    • Hours of Precip
      0
    • UV
      4 - Moderate
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Clear
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 50° 51° 55° 60° 64° 67° 70° 72°
RealFeel® 48° 50° 56° 63° 69° 70° 72° 73°
Humidity 71% 73% 66% 62% 59% 51% 46% 45%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
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0%
 
0%
 
0%
Snow
 
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Ice
 
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  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 6 ESE 6 ESE 6 E 6 E 6 E 6 ENE 6 ENE 6 ENE
UV Index 0 0 1 2 3 4 3 2
Cloud Cover 0% 0% 1% 2% 1% 1% 0% 0%
Dew Point 41° 43° 44° 47° 49° 48° 48° 49°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Feb 8

more Historical Weather Data >
  Today Normal Record 2/8/2015
High 72° 60° N/A 60°
Low 47° 44° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:06 AM with 10:34 of sunlight, then sets at 5:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:59 AM with 11:11 of moolight, then sets at 6:10 PM

Castro Valley Weather Report

San Francisco: Warmth to fall short of record highs early this week

February 8, 2016; 5:31 AM ET

Milder air will build across San Francisco this week with temperatures running above average. more >

Health Weather

Jan 19, 2016; 10:05 AM ET How the weather impacts people's health

Mon. Arthritis Pain

Mon. UV Index