• Tonight

    Sep 21

    Lo 56°

    A thunderstorm in spots

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Mon

    Sep 22

    72°Lo 44°

    Partly sunny; breezy, cooler

    Moderate ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Tue

    Sep 23

    72°Lo 50°

    Mostly sunny

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

    Sep 24

    76°Lo 54°

    Sunny and pleasant

    Moderate ragweed pollen levels
    • Precip
      8%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      0%
    more
  • Thu

    Sep 25

    75°Lo 53°

    Partly sunny and pleasant

    Ragweed Pollen Weather
    • Precip
      11%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      41%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Clear
Clear
Partly Cloudy
Partly Cloudy
Sunny
Sunny
Sunny
Sunny
Temp (°F) 59° 57° 55° 55° 57° 61° 63° 66°
RealFeel® 60° 56° 56° 56° 56° 63° 67° 72°
Humidity 100% 93% 100% 100% 100% 100% 93% 90%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
0%
 
1%
 
3%
 
3%
 
4%
 
5%
 
5%
 
5%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 0 3 NNW 0 0 3 SSE 0 0 0
UV Index 0 0 0 0 0 0 1 3
Cloud Cover 4% 4% 35% 35% 0% 9% 8% 8%
Dew Point 59° 55° 55° 55° 57° 61° 61° 63°
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

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 90° 78° N/A 73°
Low 56° 57° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:56 AM with 12:13 of sunlight, then sets at 7:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:29 AM with 13:14 of moolight, then sets at 5:43 PM

Top Story

Frederick Weather Report

DC: September Temperature Roller Coaster to Continue

September 21, 2014; 4:44 AM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Washington, D.C. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps