• Tue

    Sep 15

    80°Lo 54°

    A couple of showers possible

    Advisory for hair frizz
    • Wind
      Gust
      16 mph
    • Precip
      30%
    • Hours of Precip
      0
    more
  • Wed

    Sep 16

    78°Lo 56°

    Chance of a shower

    Advisory for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      30%
    • Hours of Precip
      0
    more
  • Thu

    Sep 17

    81°Lo 56°

    Cloudy

    Watch for hair frizz
    • Wind
      Gust
      23 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Fri

    Sep 18

    78°Lo 57°

    Clouds giving way to some sun

    Advisory for hair frizz
    • Wind
      Gust
      24 mph
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Sat

    Sep 19

    70°Lo 47°

    Sunshine

    Advisory for hair frizz
    • Wind
      Gust
      14 mph
    • Precip
      0%
    • Hours of Precip
      3
Next Previous
Hi 70° RealFeel® 74° Precipitation 0%

Day

N

E

S

W

  • NE 5 mph
  • Gusts: 14 mph

Sunshine

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 47° RealFeel® 39° Precipitation 74%

Night

N

E

S

W

  • NE 7 mph
  • Gusts: 20 mph

Partly cloudy with a couple of showers

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.28 in
  • Rain: 0.28 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2014
High 70° 75° 93° (1983) 68°
Low 47° 55° 41° (1929) 53°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:43 AM with 12:18 of sunlight, then sets at 7:01 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:28 PM with 10:19 of moolight, then sets at 10:47 PM

Princeton Weather Report

Philadelphia: Heat to Rebuild on Labor Day After Cooldown

September 5, 2015; 1:35 AM ET

A backdoor front will trim temperatures, haze and humidity around Philadelphia this weekend before all three conditions return by early 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.