• Mon

    Aug 17

    78°Lo 64°

    Periods of rain

    Hair Frizz Weather
    • Wind
      Gust
      20 mph
    • Precip
      69%
    • Hours of Precip
      7.5
    more
  • Tue

    Aug 18

    78°Lo 64°

    Mostly cloudy and less humid

    Hair Frizz Weather
    • Wind
      Gust
      9 mph
    • Precip
      25%
    • Hours of Precip
      0
  • Wed

    Aug 19

    79°Lo 68°

    Plenty of clouds

    Hair Frizz Weather
    • Wind
      Gust
      12 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Thu

    Aug 20

    83°Lo 67°

    Considerable clouds

    Hair Frizz Weather
    • Wind
      Gust
      9 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Fri

    Aug 21

    82°Lo 66°

    Mostly cloudy

    Hair Frizz Weather
    • Wind
      Gust
      9 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
Next Previous
Hi 78° RealFeel® 82° Precipitation 25%

Day

N

E

S

W

  • NNE 5 mph
  • Gusts: 9 mph

Mostly cloudy and less humid

  • 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 64° RealFeel® 63° Precipitation 25%

Night

N

E

S

W

  • NE 4 mph
  • Gusts: 7 mph

Overcast

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

Temperature History - Aug 18

more Historical Weather Data >
  Today Normal Record 8/18/2014
High 78° 84° 96° (2002) 82°
Low 64° 64° 53° (1915) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 13:40 of sunlight, then sets at 7:52 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:55 AM with 11:54 of moolight, then sets at 9:49 PM

Princeton Weather Report

Philadelphia: Hot, Dry Weather to Last Through Weekend

August 2, 2015; 5:50 AM ET

A cold front swept through the Northeast during the latter part of the week and will be the reason for a weekend without oppressive humidity. 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.