• Today

    Aug 20

    84°Lo 64°

    Partly sunny and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Thu

    Aug 21

    81°Lo 64°

    A couple of thunderstorms

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Aug 22

    78°Lo 63°

    A passing shower or two

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Aug 23

    77°Lo 61°

    Times of clouds and sun

    Low ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
  • Sun

    Aug 24

    77°Lo 59°

    Times of clouds and sun

    Ragweed Pollen Weather
    • Precip
      12%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      69%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
T-storms
Partly Cloudy
T-storms
Partly Cloudy
T-storms
Partly Cloudy
Temp (°F) 71° 73° 75° 78° 79° 81° 80° 79°
RealFeel® 71° 76° 79° 86° 86° 88° 85° 83°
Humidity 77% 71% 70% 64% 64% 58% 62% 62%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
19%
 
24%
 
58%
 
49%
 
58%
 
44%
 
52%
 
48%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 2 SE 3 SSE 3 SSE 4 SSE 4 SSE 5 SSE 5 SSE 5 SSE
UV Index 1 3 4 5 5 5 4 3
Cloud Cover 85% 78% 72% 68% 66% 65% 63% 63%
Dew Point 63° 63° 65° 65° 66° 65° 66° 65°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 81° 83° 96° (1955) 88°
Low 64° 64° 49° (2000) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:15 AM with 13:33 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:43 AM with 14:32 of moolight, then sets at 5:15 PM

Top Story

Princeton Weather Report

Philly: Downpour, Flooding Risk to Increase Thursday

August 20, 2014; 9:12 AM ET

A wedge of dry air will slowly erode at midweek and will allow drenching showers and thunderstorms to survive the trip into Philadelphia from the Midwest. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps