• Today

    Oct 20

    71°Lo 51°

    Some sun, then clouds

    Watch for hair frizz
    • Wind
      Gust
      17 mph
    • Precip
      35%
    • Hours of Precip
      0
    more
  • Tue

    Oct 21

    73°Lo 50°

    Mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      14 mph
    • Precip
      4%
    • Hours of Precip
      0
  • Wed

    Oct 22

    76°Lo 53°

    Partly sunny and nice

    Watch for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Thu

    Oct 23

    78°Lo 53°

    Sunny to partly cloudy

    Watch for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      23%
    • Hours of Precip
      0
    more
  • Fri

    Oct 24

    77°Lo 52°

    Mostly sunny

    Watch for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      25%
    • Hours of Precip
      0.5
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
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  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 52° 51° 51° 52° 56° 59° 64° 67°
RealFeel® 50° 48° 49° 50° 54° 59° 65° 68°
Humidity 90% 93% 91% 88% 77% 67% 57% 50%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
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0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
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Ice
 
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  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 5 W 5 WNW 5 WNW 5 WNW 6 NW 7 NW 8 NW 8 NW
UV Index 0 0 0 0 1 2 3 4
Cloud Cover 45% 45% 45% 11% 11% 11% 11% 11%
Dew Point 49° 49° 49° 49° 49° 48° 48° 48°
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

Temperature History - Oct 21

more Historical Weather Data >
  Today Normal Record 10/21/2013
High 73° N/A N/A 81°
Low 50° N/A N/A 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:20 AM with 11:01 of sunlight, then sets at 6:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:12 AM with 12:03 of moolight, then sets at 5:15 PM

Tracy Weather Report

San Francisco: Dry Weather to Remain Through Late Week

October 20, 2014; 4:40 PM ET

A chance of rain is expected on Monday as a Pacific storm moves through the Northwest United States. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Tue. Hair Frizz

Tue. Wind Maps

Tue. UV Index