• Tonight

    Sep 18

    Lo 52°

    Mainly clear

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

    Sep 19

    69°Lo 53°

    Partly sunny

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

    Sep 20

    76°Lo 59°

    Clouds giving way to some sun

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

    Sep 21

    82°Lo 57°

    Warm with sun and some clouds

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

    Sep 22

    71°Lo 49°

    Partly sunny and breezy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
6am
7am 8am 9am 10am 11am 12pm 1pm
  6am 7am 8am 9am 10am 11am 12pm 1pm
Forecast
Mostly Clear
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 49° 51° 54° 59° 64° 69° 73° 74°
RealFeel® 49° 51° 54° 61° 68° 72° 77° 79°
Humidity 87% 87% 79% 69% 56% 48% 43% 40%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
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%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Wind (mph) 1 N 1 N 2 WNW 2 NNW 2 N 3 N 3 N 4 N
UV Index 0 0 0 1 2 3 4 5
Cloud Cover 24% 17% 44% 42% 42% 54% 50% 55%
Dew Point 45° 48° 48° 49° 48° 49° 49° 48°
Middle Grid line 75 F 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 Middle Grid line 45 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 75° 75° 90° (1965) 71°
Low 52° 56° 39° (1986) 41°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:42 AM with 12:21 of sunlight, then sets at 7:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:32 AM with 14:20 of moolight, then sets at 3:52 PM

Top Story

Princeton Weather Report

Philly: Remainder of Week to Be Dry, Cool

September 18, 2014; 2:19 PM ET

Rainfall will continued to be scarce around Philadelphia this week, but cool air will be plentiful. 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

Thu. Snow Day Potential