• Today

    May 22

    74°Lo 39°

    Lots of sun; breezy, warmer

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      6%
    • Hi
      RealFeel
      74°
    more
  • Sat

    May 23

    70°Lo 43°

    Mostly sunny and nice

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      6%
    • Hi
      RealFeel
      73°
  • Sun

    May 24

    80°Lo 55°

    Warmer with clouds and sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      14%
    • Hi
      RealFeel
      83°
    more
  • Mon

    May 25

    83°Lo 61°

    Chance of a thunderstorm

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      30%
    • Hi
      RealFeel
      88°
    more
  • Tue

    May 26

    86°Lo 65°

    A p.m. t-storm in spots

    Very Good for lawn mowing
    • Hours of Precip
      1.5
    • Precip
      46%
    • Hi
      RealFeel
      89°
    more
Next Previous
Hi 70° RealFeel® 73° Precipitation 6%

Day

N

E

S

W

  • WNW 7 mph
  • Gusts: 13 mph

Mostly sunny and nice

  • Max UV Index: 8 (Very High)
  • 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 43° RealFeel® 44° Precipitation 8%

Night

N

E

S

W

  • WSW 4 mph
  • Gusts: 9 mph

Mainly clear

  • 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 - May 23

more Historical Weather Data >
  Today Normal Record 5/23/2014
High 70° 74° 95° (1925) 72°
Low 43° 51° 37° (2002) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:39 AM with 14:40 of sunlight, then sets at 8:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:51 AM with 13:55 of moolight, then sets at 12:46 AM

Allentown Weather Report

Philadelphia: Temperature Swings to Precede Memorial Day

May 22, 2015; 6:12 AM ET

Temperatures will remain on a roller coaster ride around Philadelphia in the days leading up to Memorial Day. 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?

Sat. Overnight Freeze

Sat. Degree Days

Sat. Evapotranspiration