• Today

    Jul 31

    88°Lo 66°

    Sunny, warm and less humid

    Poor for home energy
    • Avg
      RealFeel
      78°
    • Hi
      RealFeel
      92°
    • Wind
      Speed
      7 mph
    more
  • Sat

    Aug 1

    88°Lo 63°

    Warm with sun, some clouds

    Poor for home energy
    • Avg
      RealFeel
      77°
    • Hi
      RealFeel
      90°
    • Wind
      Speed
      9 mph
    more
  • Sun

    Aug 2

    88°Lo 68°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      78°
    • Hi
      RealFeel
      92°
    • Wind
      Speed
      7 mph
  • Mon

    Aug 3

    92°Lo 71°

    Partly sunny and hot

    Poor for home energy
    • Avg
      RealFeel
      81°
    • Hi
      RealFeel
      93°
    • Wind
      Speed
      10 mph
    more
  • Tue

    Aug 4

    87°Lo 63°

    A thunderstorm in spots

    Poor for home energy
    • Avg
      RealFeel
      76°
    • Hi
      RealFeel
      88°
    • Wind
      Speed
      10 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 74° 77° 81° 84° 86° 87° 88° 87°
RealFeel® 78° 82° 86° 90° 91° 91° 92° 89°
Humidity 62% 52% 47% 45% 41% 39% 38% 38%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
2%
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) 5 W 6 WSW 7 WSW 7 WSW 8 WSW 8 WSW 8 WSW 9 WSW
UV Index 3 4 6 7 7 7 6 4
Cloud Cover 11% 11% 11% 11% 11% 11% 11% 11%
Dew Point 61° 59° 59° 60° 60° 59° 60° 58°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Aug 2

more Historical Weather Data >
  Today Normal Record 8/2/2014
High 88° 85° 100° (2002) 76°
Low 68° 66° 55° (1998) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:57 AM with 14:15 of sunlight, then sets at 8:12 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:37 PM with 12:05 of moolight, then sets at 9:42 AM

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 >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sun. Home Energy Efficiency

Sun. Degree Days

Sun. UV Index