• Today

    Jul 31

    88°Lo 66°

    Sunny, warm and less humid

    Very Good for stargazing
    • Cloud
      Cover
      5%
    • Precip
      10%
    • Hours of Precip
      0
  • Sat

    Aug 1

    88°Lo 63°

    Warm with sun, some clouds

    Fair for stargazing
    • Cloud
      Cover
      11%
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Sun

    Aug 2

    88°Lo 68°

    Mostly sunny

    Poor for stargazing
    • Cloud
      Cover
      48%
    • Precip
      60%
    • Hours of Precip
      1
    more
  • Mon

    Aug 3

    92°Lo 71°

    Partly sunny and hot

    Fair for stargazing
    • Cloud
      Cover
      14%
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Tue

    Aug 4

    87°Lo 63°

    A thunderstorm in spots

    Excellent for stargazing
    • Cloud
      Cover
      47%
    • Precip
      17%
    • Hours of Precip
      1
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Cloudy
Cloudy
Partly Cloudy
Mostly Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 71° 70° 69° 67° 69° 71° 75° 78°
RealFeel® 72° 69° 68° 66° 68° 73° 79° 83°
Humidity 81% 81% 83% 85% 76% 79% 70% 58%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
7%
 
7%
 
7%
 
7%
 
5%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 5 NW 5 WNW 4 WNW 5 WNW 5 WNW 6 WNW 6 WNW 7 WNW
UV Index 0 0 0 0 0 1 3 4
Cloud Cover 57% 61% 45% 12% 0% 0% 1% 0%
Dew Point 65° 64° 63° 62° 61° 65° 65° 62°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 88° 85° 99° (1954) 84°
Low 66° 66° 56° (2001) 59°

Solunar Information for Princeton, NJ

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:55 AM with 14:20 of sunlight, then sets at 8:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:15 PM with 11:04 of moolight, then sets at 7:19 AM

Fri, Jul 31
Full
Fri, Aug 7
Last
Fri, Aug 14
New
Sat, Aug 22
First

Princeton Weather Report

Philadelphia: Heat to Linger, Humidity to Ease Friday, This Weekend

July 31, 2015; 4:32 AM ET

Following the steambath of this week, Philadelphia will catch a break from high humidity Friday and this weekend but not sizzling temperatures. more >

Curiosity Tastes Mars

Dec 14, 2012; 5:00 AM ET The Mars Science Laboratory Rover 'Curiosity' continues its sampling and analyzing of the Martian surface.

Fri. Stargazing