• Today

    Dec 18

    42°Lo 30°

    Mostly sunny and windy

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

    Dec 19

    41°Lo 25°

    Sun mixing with clouds

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

    Dec 20

    39°Lo 27°

    Some sun, then clouds

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

    Dec 21

    41°Lo 32°

    Clouds and sun

    Low ragweed pollen levels
    • Precip
      30%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      60%
    more
  • Mon

    Dec 22

    45°Lo 38°

    A little afternoon rain

    Ragweed Pollen Weather
    • Precip
      55%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      93%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 33° 35° 37° 39° 41° 42° 42° 41°
RealFeel® 20° 23° 25° 27° 28° 28° 30° 29°
Humidity 62% 58% 53% 50% 48% 47% 46% 48%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
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0%
Snow
 
0%
 
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Ice
 
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  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 14 NW 14 NW 16 NW 18 WNW 20 WNW 22 WNW 20 WNW 17 WNW
UV Index 0 0 1 1 2 1 1 0
Cloud Cover 16% 19% 22% 25% 26% 25% 25% 25%
Dew Point 22° 21° 22° 22° 23° 23° 23° 23°
Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 42° 42° 66° (2006) 37°
Low 30° 27° -1° (1919) 19°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:16 AM with 9:18 of sunlight, then sets at 4:34 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:27 AM with 10:46 of moolight, then sets at 2:13 PM

Princeton Weather Report

Philly: Spotty Wintry Weather This Weekend to be Paled by Major Storm Next Week

December 18, 2014; 5:32 AM ET

After a weak storm brings spotty light snow and rain to the region this weekend, a storm will threaten major travel disruptions around Philadelphia before Christmas. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps