• Today

    Sep 2

    91°Lo 66°

    Partly sunny; hot in the p.m.

    Advisory for hair frizz
    • Wind
      Gust
      6 mph
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Thu

    Sep 3

    92°Lo 69°

    Hot with sun, some clouds

    Warning for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      19%
    • Hours of Precip
      0.5
  • Fri

    Sep 4

    82°Lo 60°

    Some sun, a t-storm; humid

    Warning for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      55%
    • Hours of Precip
      1
    more
  • Sat

    Sep 5

    83°Lo 54°

    Mostly sunny and pleasant

    Watch for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      3%
    • Hours of Precip
      0
    more
  • Sun

    Sep 6

    85°Lo 56°

    Mostly sunny and warm

    Watch for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      7%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Temp (°F) 72° 71° 70° 69° 68° 68° 66° 69°
RealFeel® 73° 72° 71° 69° 68° 68° 65° 69°
Humidity 79% 84% 86% 84% 84% 87% 93% 85%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
2%
 
1%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 4 NW 4 NW 4 NNW 4 NNW 4 NNW 4 NNW 4 NNW 4 NNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 26% 26% 26% 26% 26% 26% 26% 26%
Dew Point 65° 66° 66° 64° 63° 64° 64° 64°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 92° 79° 99° (1953) 84°
Low 69° 58° 41° (1967) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 13:01 of sunlight, then sets at 7:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:52 PM with 14:20 of moolight, then sets at 1:12 PM

Bethlehem Weather Report

Philadelphia: July-like Heat to Continue Through Labor Day

September 2, 2015; 4:56 AM ET

The vast majority of the time through the Labor Day weekend will feature sunshine with unseasonably hot afternoons around Philadelphia. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Thu. Hair Frizz

Thu. Wind Maps

Thu. UV Index