• Tonight

    Sep 20

    Lo 59°

    Partly cloudy

    Driving Weather
    • Precip
      2%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Sun

    Sep 21

    84°Lo 59°

    A t-storm in the afternoon

    Good for driving
    • Precip
      55%
    • Hours of Precip
      1.5
    • Rain
      0.15 in
  • Mon

    Sep 22

    71°Lo 46°

    Mostly sunny and not as warm

    Excellent for driving
    • Precip
      8%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Tue

    Sep 23

    70°Lo 50°

    Mostly sunny

    Excellent for driving
    • Precip
      0%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Wed

    Sep 24

    74°Lo 56°

    Sunny and nice

    Excellent for driving
    • Precip
      10%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 60° 59° 60° 62° 62° 66° 70° 75°
RealFeel® 59° 59° 59° 62° 63° 67° 72° 79°
Humidity 93% 93% 93% 93% 93% 87% 77% 66%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
0%
 
0%
 
0%
 
1%
 
4%
 
4%
 
4%
 
6%
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) 2 ENE 2 ENE 2 E 1 SW 1 WSW 2 SSW 2 SSW 3 SW
UV Index 0 0 0 0 0 1 3 4
Cloud Cover 45% 45% 45% 39% 22% 17% 20% 23%
Dew Point 58° 57° 58° 60° 60° 62° 62° 63°
Middle Grid line 80 F 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

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 84° 78° 96° (1895) 80°
Low 59° 60° 41° (1956) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:55 AM with 12:13 of sunlight, then sets at 7:08 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:28 AM with 13:14 of moolight, then sets at 5:42 PM

Top Story

Rockville Weather Report

DC: September Temperature Roller Coaster to Continue

September 20, 2014; 2:04 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 >

Travel Weather Forecast

Sep 20, 2014; 11:53 AM ET United States travel weather forecast

Sun. Travel Weather

48 Hour Precipitation Forecast

Sun. Driving Weather