• Tue

    Sep 15

    77°Lo 60°

    Times of clouds and sun

    Asthma Weather
    • Hi
      RealFeel
      76°
    • Precip
      25%
    • Cloud
      Cover
      68%
    more
  • Wed

    Sep 16

    77°Lo 55°

    Clouds giving way to some sun

    Asthma Weather
    • Hi
      RealFeel
      78°
    • Precip
      25%
    • Cloud
      Cover
      39%
    more
  • Thu

    Sep 17

    77°Lo 60°

    Partly sunny

    Asthma Weather
    • Hi
      RealFeel
      79°
    • Precip
      25%
    • Cloud
      Cover
      48%
    more
  • Fri

    Sep 18

    78°Lo 58°

    Periods of rain

    Asthma Weather
    • Hi
      RealFeel
      80°
    • Precip
      64%
    • Cloud
      Cover
      89%
  • Sat

    Sep 19

    74°Lo 59°

    Mostly sunny

    Asthma Weather
    • Hi
      RealFeel
      76°
    • Precip
      10%
    • Cloud
      Cover
      23%
    more
Next Previous
Hi 78° RealFeel® 80° Precipitation 64%

Day

N

E

S

W

  • SE 2 mph
  • Gusts: 7 mph

Periods of rain

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 9%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs
Lo 58° RealFeel® 57° Precipitation 25%

Night

N

E

S

W

  • W 4 mph
  • Gusts: 7 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • 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 18

more Historical Weather Data >
  Today Normal Record 9/18/2014
High 78° 75° 90° (1965) 75°
Low 58° 56° 39° (1986) 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:42 AM with 12:21 of sunlight, then sets at 7:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:32 AM with 10:32 of moolight, then sets at 10:04 PM

Princeton Weather Report

Philadelphia: Sizzling Heat Wave to Start September

August 31, 2015; 3:45 AM ET

A push of summery heat and humidity will arrive in Philadelphia this week as September begins more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.