• Tonight

    Apr 27

    Lo 52°

    Mainly clear

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Tue

    Apr 28

    83°Lo 51°

    Mostly sunny

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    Apr 29

    82°Lo 53°

    Partly sunny

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Apr 30

    90°Lo 56°

    Plenty of sunshine

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Fri

    May 1

    91°Lo 54°

    Sunny and very warm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
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3pm 4pm 5pm 6pm 7pm 8pm 9pm
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Forecast
Mostly Sunny
Mostly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Cloudy
Partly Cloudy
Temp (°F) 82° 84° 84° 84° 84° 78° 73° 66°
RealFeel® 87° 88° 86° 84° 82° 75° 70° 64°
Humidity 26% 24% 25% 25% 27% 34% 43% 54%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Rain
 
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0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Wind (mph) 8 N 8 NNW 9 NNE 9 NNE 8 N 9 WNW 9 WNW 8 W
UV Index 7 6 4 3 1 0 0 0
Cloud Cover 18% 26% 30% 23% 17% 43% 36% 47%
Dew Point 44° 44° 45° 45° 46° 48° 49° 49°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Apr 27

more Historical Weather Data >
  Today Normal Record 4/27/2014
High 84° N/A N/A 70°
Low 52° N/A N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:15 AM with 13:38 of sunlight, then sets at 7:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:13 PM with 13:12 of moolight, then sets at 3:25 AM

Tracy Weather Report

San Francisco: Dry, Tranquil Weather to Hold for Rest of the Week

April 27, 2015; 8:52 PM ET

Following a warmer start to the week, an onshore flow will bring noticeable cooler conditions and patchy areas of low clouds through midweek. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Mon. Snow Day Potential