• Early AM

    Apr 17

    Lo 27°

    Clear

    Dust & Dander Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Today

    Apr 17

    59°Lo 34°

    Times of clouds and sun

    High indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Fri

    Apr 18

    59°Lo 39°

    Some sun, then clouds

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
  • Sat

    Apr 19

    69°Lo 33°

    Mostly cloudy

    Moderate indoor dust & dander levels
    • Precip
      12%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      76%
    more
  • Sun

    Apr 20

    64°Lo 37°

    Intervals of clouds and sun

    Moderate indoor dust & dander levels
    • Precip
      9%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Mostly Clear
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Sunny
Temp (°F) 39° 38° 36° 34° 35° 35° 36° 40°
RealFeel® 38° 38° 36° 34° 35° 34° 35° 41°
Humidity 77% 80% 84% 87% 87% 86% 81% 76%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
0%
 
1%
 
1%
 
1%
 
1%
 
1%
 
1%
 
2%
Snow
 
0%
 
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Ice
 
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  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 2 ENE 2 ENE 2 ENE 2 NE 2 NE 3 NE 3 NE 3 NE
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 26% 76% 76% 76% 76% 76% 76% 45%
Dew Point 32° 32° 31° 31° 31° 31° 31° 33°
Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2013
High 59° 69° N/A 75°
Low 39° 46° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 13:19 of sunlight, then sets at 7:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:32 PM with 10:17 of moolight, then sets at 8:49 AM

Top Story

Frederick Weather Report

DC: Gradual Turn to Milder Weather into Easter Weekend

April 16, 2014; 6:42 PM ET

The return of noticeably milder air to Washington, D.C., will coincide with this Easter weekend. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps