• Tonight

    Apr 18

    Lo 47°

    Clear to partly cloudy

    Hair Frizz Weather
    • Wind
      Gust
      17 mph
    • Precip
      14%
    • Hours of Precip
      0
    more
  • Sun

    Apr 19

    62°Lo 46°

    Some sun, then clouds; cooler

    Unlikely for hair frizz
    • Wind
      Gust
      21 mph
    • Precip
      25%
    • Hours of Precip
      6
    more
  • Mon

    Apr 20

    66°Lo 55°

    Morning rain, heavy at times

    Advisory for hair frizz
    • Wind
      Gust
      18 mph
    • Precip
      80%
    • Hours of Precip
      7.5
  • Tue

    Apr 21

    66°Lo 42°

    Partly sunny and nice

    Watch for hair frizz
    • Wind
      Gust
      25 mph
    • Precip
      14%
    • Hours of Precip
      0
    more
  • Wed

    Apr 22

    64°Lo 42°

    Breezy with increasing clouds

    Unlikely for hair frizz
    • Wind
      Gust
      28 mph
    • Precip
      18%
    • Hours of Precip
      0
    more
Next Previous
Hi 66° RealFeel® 65° Precipitation 80%

Day

N

E

S

W

  • NE 9 mph
  • Gusts: 18 mph

Cloudy; morning downpours, then a thunderstorm in spots; there can be flooding in some areas

  • Max UV Index: 2 (Low)
  • Thunderstorms: 40%
  • Precipitation: 0.52 in
  • Rain: 0.52 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3.5 hrs
  • Hours of Rain: 3.5 hrs
Lo 55° RealFeel® 49° Precipitation 66%

Night

N

E

S

W

  • N 8 mph
  • Gusts: 16 mph

Periods of rain and a thunderstorm in the evening; considerable clouds

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.32 in
  • Rain: 0.32 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 66° 63° 91° (1941) 57°
Low 55° 42° 27° (1926) 38°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:13 AM with 13:29 of sunlight, then sets at 7:42 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:40 AM with 14:22 of moolight, then sets at 10:02 PM

Princeton Weather Report

Philly: Weekend to End Cooler with Rain to Follow

April 18, 2015; 10:29 PM ET

A repeat of Saturday's warmth is not expected anytime soon in Philadelphia, with the weather taking a cooler, then wet turn. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Mon. Hair Frizz

Mon. Wind Maps

Mon. UV Index