• Today

    Apr 21

    74°Lo 44°

    Mostly sunny and nice

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Tue

    Apr 22

    74°Lo 41°

    An afternoon t-storm or two

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Wed

    Apr 23

    63°Lo 32°

    Partly sunny; windy, cooler

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Thu

    Apr 24

    68°Lo 45°

    A full day of sunshine

    Low indoor dust & dander levels
    • Precip
      6%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      9%
    more
  • Fri

    Apr 25

    79°Lo 48°

    A passing shower or two

    Low indoor dust & dander levels
    • Precip
      56%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      72%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
6am
7am 8am 9am 10am 11am 12pm 1pm
  6am 7am 8am 9am 10am 11am 12pm 1pm
Forecast
Cloudy
Partly Cloudy
Cloudy
Mostly Cloudy
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 45° 46° 51° 57° 61° 66° 71° 71°
RealFeel® 44° 45° 51° 58° 63° 67° 72° 72°
Humidity 93% 93% 89% 79% 67% 57% 52% 49%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Rain
 
6%
 
6%
 
7%
 
7%
 
6%
 
5%
 
5%
 
8%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Wind (mph) 3 S 3 SSW 3 SW 4 SW 5 SW 5 SSW 6 SW 7 SW
UV Index 0 0 1 1 2 3 3 4
Cloud Cover 70% 70% 90% 89% 90% 90% 89% 88%
Dew Point 43° 44° 48° 50° 49° 50° 52° 51°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 22

more Historical Weather Data >
  Today Normal Record 4/22/2013
High 74° 70° N/A 57°
Low 41° 47° N/A 32°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 13:31 of sunlight, then sets at 7:54 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:08 AM with 10:47 of moolight, then sets at 12:55 PM

Top Story

Frederick Weather Report

DC: Temperatures to Remain on a Roller Coaster Ride

April 21, 2014; 4:40 AM ET

Temperatures will remain on the spring roller coaster ride this week in Washington, D.C. more >

Is it a Cold or the Flu?

Apr 19, 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?

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps