• Early AM

    Dec 19

    Lo 30°

    Variable cloudiness

    Snow Days Weather
    • Snow
      1%
    • Ice
      0%
    • Snow
      0 in
    more
  • Today

    Dec 19

    40°Lo 24°

    Sun mixing with clouds

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

    Dec 20

    38°Lo 27°

    Some sun, then clouds

    Very Unlikely for a snow day
    • Snow
      5%
    • Ice
      0%
    • Snow
      0 in
  • Sun

    Dec 21

    41°Lo 29°

    Partly sunny

    Very Unlikely for a snow day
    • Snow
      7%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Dec 22

    45°Lo 39°

    Cloudy, afternoon rain

    Very Unlikely for a snow day
    • Snow
      10%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 27° 26° 25° 24° 25° 26° 29° 33°
RealFeel® 25° 25° 24° 23° 23° 25° 29° 34°
Humidity 69% 71% 73% 75% 75% 70% 64% 58%
   
  3am 4am 5am 6am 7am 8am 9am 10am
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%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 5 NNW 5 NW 5 NNW 5 NNW 4 NNW 4 N 4 N 4 NNE
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 26% 26% 26% 26% 26% 27% 45% 45%
Dew Point 18° 18° 18° 17° 18° 18° 18° 19°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F Middle Grid line 20 F

Temperature History - Dec 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 38° 42° 65° (1895) 50°
Low 27° 26° -1° (1942) 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:17 AM with 9:18 of sunlight, then sets at 4:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:31 AM with 10:14 of moolight, then sets at 3:45 PM

Princeton Weather Report

Philly: Quiet Weekend Weather to be Followed by Christmas Eve Storm

December 19, 2014; 2:10 AM ET

Following benign weather this weekend, a major storm will affect Philadelphia, much of the East and Midwest on Christmas Eve. 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

Sat. Snow Day Potential