• Early AM

    Dec 29

    Lo 38°

    Cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Dec 29

    45°Lo 32°

    Mostly cloudy and colder

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Tue

    Dec 30

    40°Lo 23°

    Clouds giving way to some sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Wed

    Dec 31

    36°Lo 21°

    Times of clouds and sun

    Low ragweed pollen levels
    • Precip
      7%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      46%
    more
  • Thu

    Jan 1

    41°Lo 24°

    Sunny

    Low ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      13%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 41° 39° 38° 40° 40° 40° 42° 43°
RealFeel® 36° 35° 35° 36° 37° 37° 39° 41°
Humidity 76% 77% 77% 74% 73% 69% 65% 61%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
34%
 
34%
 
28%
 
18%
 
18%
 
18%
 
18%
 
18%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 7 N 6 N 6 N 6 N 6 N 6 NNE 6 NNE 6 NNE
UV Index 0 0 0 0 0 0 1 1
Cloud Cover 99% 98% 98% 94% 94% 94% 94% 94%
Dew Point 34° 33° 32° 32° 32° 31° 31° 30°
Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F

Temperature History - Dec 29

more Historical Weather Data >
  Today Normal Record 12/29/2013
High 45° 43° 78° (1984) 49°
Low 32° 25° (1977) 37°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:28 AM with 9:27 of sunlight, then sets at 4:55 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:28 PM with 13:22 of moolight, then sets at 1:50 AM

Herndon Weather Report

DC: 2014, December to End Cold and Dry

December 29, 2014; 3:02 AM ET

Progressively colder conditions are in the offing for Washington, D.C., during the last days of 2014 and December and into the start of 2015. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps