• Today

    May 21

    85°Lo 66°

    A thunderstorm in spots

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Wed

    May 22

    86°Lo 67°

    Thundershower

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Thu

    May 23

    78°Lo 56°

    A couple of thunderstorms

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Fri

    May 24

    73°Lo 46°

    Chance of a morning shower

    Extreme indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      73%
    more
  • Sat

    May 25

    70°Lo 44°

    Mostly sunny

    Very High indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      24%
    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
T-storms
Cloudy
T-storms
Mostly Cloudy
Cloudy
Cloudy
T-storms
Temp (°F) 71° 72° 74° 74° 76° 77° 78° 75°
RealFeel® 70° 70° 73° 73° 76° 76° 77° 74°
Humidity 85% 80% 76% 81% 76% 72% 69% 80%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
47%
 
51%
 
43%
 
51%
 
47%
 
43%
 
47%
 
51%
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) 8 SSW 10 SSW 12 SSW 13 SSW 14 SSW 16 SSW 15 SSW 14 SSW
UV Index 1 2 2 3 3 3 3 2
Cloud Cover 89% 90% 90% 89% 89% 90% 90% 90%
Dew Point 66° 65° 66° 68° 68° 68° 67° 69°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - May 23

more Historical Weather Data >
  Today Normal Record 5/23/2012
High 78° 74° 99° (1911) 81°
Low 56° 53° 41° (2006) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:36 AM with 14:39 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:44 PM with 10:21 of moolight, then sets at 5:05 AM

Top Story

Princeton Weather Report

Summerlike Tuesday in DC, Philadelphia, New York

May 20, 2013; 10:38 PM ET

Rising temperatures and humidity across the mid-Atlantic will have it feeling like the end of June. more >

Smoke Alert: The Hidden Dangers of E-Cigarettes

May 20, 2013; 5:00 AM ET E-cigarette manufacturers claim the devices can help a person quit smoking but have those claims ever been proven?

Thu. Dust & Dander

Thu. Wind Maps