• Today

    Jan 29

    33°Lo 28°

    Some sun, then clouds

    Poor for lawn mowing
    • Hours of Precip
      2
    • Precip
      12%
    • Hi
      RealFeel
      34°
    more
  • Fri

    Jan 30

    36°Lo 12°

    Flurries; becoming windier

    Poor for lawn mowing
    • Hours of Precip
      2.5
    • Precip
      57%
    • Hi
      RealFeel
      25°
    more
  • Sat

    Jan 31

    24°Lo 15°

    Sunny, breezy and colder

    Poor for lawn mowing
    • Hours of Precip
      0
    • Precip
      0%
    • Hi
      RealFeel
      10°
    more
  • Sun

    Feb 1

    33°Lo 14°

    Partly sunny and not as cold

    Poor for lawn mowing
    • Hours of Precip
      5
    • Precip
      14%
    • Hi
      RealFeel
      29°
  • Mon

    Feb 2

    21°Lo 4°

    Colder with snow tapering off

    Poor for lawn mowing
    • Hours of Precip
      3.5
    • Precip
      75%
    • Hi
      RealFeel
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 24° 28° 30° 32° 33° 32° 30° 28°
RealFeel® 19° 25° 27° 29° 29° 27° 25° 23°
Humidity 78% 72% 68% 65% 64% 65% 66% 69%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
1%
 
2%
 
2%
 
2%
 
2%
 
2%
 
2%
 
3%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 7 W 7 W 7 W 8 W 8 WNW 8 WNW 8 NW 7 NNW
UV Index 1 1 2 2 2 1 0 0
Cloud Cover 57% 72% 75% 72% 70% 74% 82% 89%
Dew Point 18° 20° 21° 21° 22° 21° 20° 19°
Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F Middle Grid line 20 F

Temperature History - Feb 1

more Historical Weather Data >
  Today Normal Record 2/1/2014
High 33° 40° 67° (2012) 47°
Low 14° 24° -3° (1920) 28°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:08 AM with 10:09 of sunlight, then sets at 5:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:32 PM with 14:24 of moolight, then sets at 5:56 AM

Princeton Weather Report

Philadelphia: Return of Cold May Set Up Round of Accumulating Snow

January 29, 2015; 12:46 PM ET

In the wake of the Thursday night spotty snow, sleet and rain around Philadelphia, much colder air will sweep in and remain for the weekend. 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?

Sun. Degree Days

Sun. Evapotranspiration