• Early AM

    Dec 18

    Lo 49°

    A brief shower or two

    Bicycling Weather
    • Precip
      53%
    • Hours of Precip
      1.5
    • Wind
      Gust
      15 mph
    more
  • Today

    Dec 18

    59°Lo 54°

    Cloudy most of the time

    Very Good for biking
    • Precip
      17%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
  • Fri

    Dec 19

    60°Lo 50°

    Periods of rain

    Poor for biking
    • Precip
      65%
    • Hours of Precip
      3
    • Wind
      Gust
      13 mph
    more
  • Sat

    Dec 20

    59°Lo 53°

    Times of clouds and sun

    Excellent for biking
    • Precip
      25%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
  • Sun

    Dec 21

    62°Lo 52°

    Clouds and limited sun

    Excellent for biking
    • Precip
      7%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Showers
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 53° 53° 52° 50° 49° 53° 53° 53°
RealFeel® 47° 48° 47° 46° 44° 49° 49° 50°
Humidity 87% 88% 92% 93% 93% 85% 86% 84%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
51%
 
47%
 
34%
 
34%
 
23%
 
1%
 
1%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
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  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 9 SE 8 SE 7 SE 7 SE 8 ESE 7 ESE 7 ESE 7 ESE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 97% 94% 93% 93% 93% 100% 96% 92%
Dew Point 49° 49° 49° 48° 47° 49° 49° 49°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 59° 57° 68° (1910) 56°
Low 54° 46° 36° (1924) 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:20 AM with 9:33 of sunlight, then sets at 4:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:41 AM with 10:53 of moolight, then sets at 2:34 PM

AT&T Park Weather Report

San Francisco: Dry Weather Ahead for the Weekend

December 18, 2014; 2:49 AM ET

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

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.