• Wed

    Sep 2

    90°Lo 67°

    Sunshine, hot and humid

    Watch for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      6%
    • Hours of Precip
      0
    more
  • Thu

    Sep 3

    84°Lo 69°

    Partly sunny and humid

    Watch for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      8%
    • Hours of Precip
      0
    more
  • Fri

    Sep 4

    85°Lo 64°

    Partly sunny and humid

    Advisory for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      25%
    • Hours of Precip
      1.5
    more
  • Sat

    Sep 5

    86°Lo 67°

    A thunderstorm possible

    Advisory for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      30%
    • Hours of Precip
      1.5
  • Sun

    Sep 6

    82°Lo 66°

    Some sun, then clouds

    Advisory for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      25%
    • Hours of Precip
      2
    more
Next Previous
Hi 86° RealFeel® 90° Precipitation 30%

Day

N

E

S

W

  • SW 5 mph
  • Gusts: 13 mph

Partly sunny with a shower or thunderstorm possible

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 67° RealFeel® 68° Precipitation 51%

Night

N

E

S

W

  • S 6 mph
  • Gusts: 15 mph

Partly cloudy and humid with a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.12 in
  • Rain: 0.12 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs

Temperature History - Sep 5

more Historical Weather Data >
  Today Normal Record 9/5/2014
High 86° 80° 94° (1983) 89°
Low 67° 60° 47° (1994) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 12:54 of sunlight, then sets at 7:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:49 PM with 18:19 of moolight, then sets at 2:09 PM

Princeton Weather Report

Philadelphia: Heat, Humidity to Come Back Into Next Week

August 28, 2015; 10:03 AM ET

Heat and humidity will return to Philadelphia this weekend and hang on into next week. 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.