• Today

    Sep 5

    82°Lo 57°

    Turning sunny and less humid

    Excellent for biking
    • Precip
      1%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
  • Sun

    Sep 6

    84°Lo 59°

    Plenty of sunshine

    Excellent for biking
    • Precip
      4%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
  • Mon

    Sep 7

    88°Lo 64°

    Sunny and very warm

    Excellent for biking
    • Precip
      7%
    • Hours of Precip
      0
    • Wind
      Gust
      8 mph
    more
  • Tue

    Sep 8

    91°Lo 70°

    Mostly sunny and hot

    Excellent for biking
    • Precip
      8%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
  • Wed

    Sep 9

    91°Lo 68°

    A p.m. t-storm possible

    Very Good for biking
    • Precip
      30%
    • Hours of Precip
      0
    • Wind
      Gust
      12 mph
    more
Next Previous
Hi 91° RealFeel® 96° Precipitation 8%

Day

N

E

S

W

  • SW 7 mph
  • Gusts: 10 mph

Mostly sunny and hot

  • Max UV Index: 6 (High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 70° RealFeel® 72° Precipitation 13%

Night

N

E

S

W

  • SSW 6 mph
  • Gusts: 9 mph

Clear, warm and humid

  • Max UV Index: N/A
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 8

more Historical Weather Data >
  Today Normal Record 9/8/2014
High 91° 79° 95° (1939) 76°
Low 70° 60° 41° (1984) 62°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:32 AM with 12:48 of sunlight, then sets at 7:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:12 AM with 14:24 of moolight, then sets at 4:36 PM

Princeton Weather Report

Philadelphia: Heat to Rebuild on Labor Day After Cooldown

September 5, 2015; 6:42 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 >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.