• Tonight

    Aug 31

    Lo 65°

    Clear, warm and humid

    Lawn Mowing Weather
    • Hours of Precip
      0
    • Precip
      10%
    • Hi
      RealFeel
      96°
    more
  • Tue

    Sep 1

    91°Lo 65°

    Sunny, hot and humid

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      5%
    • Hi
      RealFeel
      99°
  • Wed

    Sep 2

    93°Lo 66°

    Mostly sunny, hot and humid

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      8%
    • Hi
      RealFeel
      99°
    more
  • Thu

    Sep 3

    92°Lo 66°

    A p.m. t-storm in spots

    Very Good for lawn mowing
    • Hours of Precip
      1
    • Precip
      42%
    • Hi
      RealFeel
      96°
    more
  • Fri

    Sep 4

    87°Lo 62°

    Partly sunny

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      18%
    • Hi
      RealFeel
      91°
    more
Next Previous
Hi 91° RealFeel® 99° Precipitation 5%

Day

N

E

S

W

  • NNW 4 mph
  • Gusts: 5 mph

Hot and humid with plenty of sun

  • Max UV Index: 6 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 65° RealFeel® 66° Precipitation 10%

Night

N

E

S

W

  • NW 1 mph
  • Gusts: 4 mph

Clear, warm and humid

  • 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 - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 91° 80° N/A N/A
Low 65° 58° N/A N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:29 AM with 13:06 of sunlight, then sets at 7:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:30 PM with 13:30 of moolight, then sets at 11:00 AM

Allentown Weather Report

Philadelphia: Sizzling Heat Wave to Start September

August 31, 2015; 4:36 PM ET

July-like heat and humidity will continue around Philadelphia for the first week of September. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Tue. Overnight Freeze

Tue. Degree Days

Tue. Evapotranspiration