• Today

    Aug 20

    88°Lo 66°

    A p.m. t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Thu

    Aug 21

    85°Lo 66°

    A couple of thunderstorms

    Low ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Fri

    Aug 22

    83°Lo 67°

    Couple of thunderstorms

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

    Aug 23

    77°Lo 64°

    Cooler with a shower or two

    Low ragweed pollen levels
    • Precip
      61%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      70%
    more
  • Sun

    Aug 24

    77°Lo 62°

    More clouds than sun

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      88%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 81° 82° 84° 85° 87° 88° 85° 82°
RealFeel® 85° 91° 91° 90° 91° 90° 87° 83°
Humidity 69% 71% 67% 59% 56% 52% 57% 65%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
7%
 
7%
 
9%
 
13%
 
13%
 
17%
 
43%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (mph) 7 S 3 SSW 8 S 8 S 8 S 7 S 6 S 5 S
UV Index 3 3 4 5 4 3 2 1
Cloud Cover 95% 95% 85% 82% 78% 80% 70% 65%
Dew Point 70° 72° 72° 69° 69° 68° 69° 69°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F

Temperature History - Aug 20

more Historical Weather Data >
  Today Normal Record 8/20/2013
High 88° 86° N/A 84°
Low 66° 66° N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 13:32 of sunlight, then sets at 7:59 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:06 AM with 14:35 of moolight, then sets at 4:41 PM

Top Story

Frederick Weather Report

DC: Downpour, Flooding Risk to Increase

August 20, 2014; 9:08 AM ET

A wedge of dry air will slowly erode at midweek and will allow drenching showers and thunderstorms to survive the trip into Washington, D.C., from the Midwest. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps