• Today

    Jul 23

    76°Lo 59°

    Areas of low clouds, then sun

    Excellent for driving
    • Precip
      2%
    • Hours of Precip
      0
    • Rain
      0 in
  • Thu

    Jul 24

    83°Lo 59°

    A full day of sunshine

    Excellent for driving
    • Precip
      1%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Fri

    Jul 25

    88°Lo 61°

    A full day of sunshine

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

    Jul 26

    83°Lo 60°

    Partly sunny

    Excellent for driving
    • Precip
      1%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Sun

    Jul 27

    82°Lo 60°

    Partly sunny

    Excellent for driving
    • Precip
      1%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 70° 73° 74° 75° 76° 75° 73° 71°
RealFeel® 75° 77° 77° 78° 78° 75° 71° 68°
Humidity 67% 63% 60% 59% 56% 58% 60% 62%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 7 SW 8 SW 9 WSW 10 W 11 W 12 W 12 W 11 W
UV Index 6 7 7 8 7 5 3 2
Cloud Cover 73% 70% 70% 7% 11% 11% 11% 11%
Dew Point 59° 59° 60° 59° 59° 59° 58° 58°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 23

more Historical Weather Data >
  Today Normal Record 7/23/2013
High 76° N/A N/A 75°
Low 59° N/A N/A 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 14:20 of sunlight, then sets at 8:25 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:28 AM with 14:30 of moolight, then sets at 5:58 PM

Top Story

Castro Valley Weather Report

San Francisco: Sunny Skies, No Drought Relief in Sight

July 23, 2014; 7:54 AM ET

With partly sunny skies ahead, the San Francisco area will not be receiving needed drought relief for an extended stretch of time. more >

Travel Weather Forecast

Jul 23, 2014; 6:10 AM ET United States travel weather forecast

Wed. Travel Weather

48 Hour Precipitation Forecast

Wed. Driving Weather