• Today

    Oct 24

    73°Lo 59°

    Mostly sunny

    Excellent for driving
    • Precip
      13%
    • Hours of Precip
      0.5
    • Rain
      0.03 in
    more
  • Sat

    Oct 25

    70°Lo 54°

    Mostly cloudy, showers around

    Very Good for driving
    • Precip
      59%
    • Hours of Precip
      2.5
    • Rain
      0.10 in
  • Sun

    Oct 26

    69°Lo 50°

    Times of clouds and sun

    Excellent for driving
    • Precip
      9%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Mon

    Oct 27

    70°Lo 50°

    Partly sunny

    Excellent for driving
    • Precip
      3%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Tue

    Oct 28

    71°Lo 55°

    Partly sunny

    Excellent for driving
    • Precip
      9%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Cloudy
Mostly Cloudy
Cloudy
Cloudy
Showers
Showers
Mostly Cloudy
Mostly Cloudy
Temp (°F) 61° 60° 60° 59° 60° 61° 62° 63°
RealFeel® 54° 53° 52° 52° 52° 53° 55° 57°
Humidity 85% 87% 89% 91% 89% 89% 87% 85%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
15%
 
20%
 
43%
 
47%
 
51%
 
51%
 
47%
 
40%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 15 S 16 S 17 SSE 15 S 15 S 15 S 16 S 17 S
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 89% 89% 90% 91% 92% 90% 83% 76%
Dew Point 56° 56° 57° 56° 57° 57° 58° 58°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Oct 25

more Historical Weather Data >
  Today Normal Record 10/25/2013
High 70° N/A N/A 70°
Low 54° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:26 AM with 10:52 of sunlight, then sets at 6:18 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:10 AM with 10:37 of moolight, then sets at 7:47 PM

Castro Valley Weather Report

Rain Heads to San Francisco for World Series Game Four

October 24, 2014; 4:35 AM ET

Rain is expected to make a return to the Bay Area by the weekend, just in time for game 4 of the World Series. more >

Travel Weather Forecast

Oct 24, 2014; 12:07 AM ET United States travel weather forecast

Sat. Travel Weather

48 Hour Precipitation Forecast

Sat. Driving Weather