• Tonight

    Dec 21

    Lo 24°

    Patchy clouds

    Hair Frizz Weather
    • Wind
      Gust
      6 mph
    • Precip
      2%
    • Hours of Precip
      0
  • Mon

    Dec 22

    43°Lo 32°

    Considerable cloudiness

    Watch for hair frizz
    • Wind
      Gust
      9 mph
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Tue

    Dec 23

    52°Lo 45°

    Damp in the afternoon

    Watch for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      42%
    • Hours of Precip
      5
    more
  • Wed

    Dec 24

    58°Lo 35°

    Breezy with periods of rain

    Advisory for hair frizz
    • Wind
      Gust
      25 mph
    • Precip
      69%
    • Hours of Precip
      8.5
    more
  • Thu

    Dec 25

    41°Lo 32°

    Colder; morning snow showers

    Advisory for hair frizz
    • Wind
      Gust
      30 mph
    • Precip
      66%
    • Hours of Precip
      1
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
10am
11am 12pm 1pm 2pm 3pm 4pm 5pm
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Forecast
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Cloudy
Temp (°F) 30° 31° 32° 34° 36° 35° 33° 31°
RealFeel® 34° 36° 37° 37° 38° 36° 33° 31°
Humidity 50% 52% 49% 46% 43% 45% 46% 50%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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0%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Wind (mph) 0 1 N 1 N 2 N 2 NNE 2 N 4 NNE 4 NE
UV Index 0 1 1 1 1 0 0 0
Cloud Cover 99% 94% 86% 84% 76% 70% 61% 55%
Dew Point 13° 15° 15° 15° 15° 15° 15° 14°
Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 36° 37° 61° (2013) 61°
Low 24° 20° (1989) 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:40 AM with 9:18 of sunlight, then sets at 4:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:54 AM with 10:10 of moolight, then sets at 5:04 PM

Washington Weather Report

Pittsburgh: Christmas Eve Storm to Affect Holiday Travel This Week

December 21, 2014; 5:31 PM ET

Holiday travel will be at risk across the Pittsburgh area this week as a strong storm takes shape and blasts through the Northeast. 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.

Sun. Hair Frizz

Sun. Wind Maps

Sun. UV Index