• Today

    Dec 18

    59°Lo 49°

    A passing shower this morning

    Good for lawn mowing
    • Hours of Precip
      0.5
    • Precip
      55%
    • Hi
      RealFeel
      59°
  • Fri

    Dec 19

    58°Lo 48°

    Periods of rain

    Poor for lawn mowing
    • Hours of Precip
      4.5
    • Precip
      66%
    • Hi
      RealFeel
      54°
    more
  • Sat

    Dec 20

    59°Lo 48°

    Times of clouds and sun

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      22%
    • Hi
      RealFeel
      59°
    more
  • Sun

    Dec 21

    63°Lo 50°

    Dense fog in the morning

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      7%
    • Hi
      RealFeel
      61°
    more
  • Mon

    Dec 22

    63°Lo 46°

    Dense fog will lift

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      2%
    • Hi
      RealFeel
      62°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
6pm
7pm 8pm 9pm 10pm 11pm Fri
12am
1am
  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Forecast
Mostly Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 54° 53° 52° 52° 52° 52° 52° 52°
RealFeel® 52° 51° 50° 50° 50° 49° 48° 47°
Humidity 82% 85% 86% 86% 86% 85% 86% 85%
   
  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Rain
 
0%
 
4%
 
4%
 
4%
 
6%
 
6%
 
6%
 
7%
Snow
 
0%
 
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Ice
 
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  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Wind (mph) 5 SE 5 SSE 5 SSE 5 SSE 5 SSE 6 SSE 7 SSE 7 SSE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 81% 90% 92% 91% 90% 90% 92% 94%
Dew Point 49° 49° 48° 48° 48° 48° 48° 48°
Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 59° N/A N/A 68°
Low 49° N/A N/A 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:16 AM with 9:34 of sunlight, then sets at 4:50 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:38 AM with 10:52 of moolight, then sets at 2:30 PM

Tracy Weather Report

San Francisco: Dry Weather Ahead for the Weekend

December 18, 2014; 9:19 AM ET

Conditions will turn dry for San Francisco this weekend and last into next week. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Current Drought Status

Current Soil Conditions

Thu. Overnight Freeze

Thu. Degree Days

Thu. Evapotranspiration