• Early AM

    Dec 20

    Lo 27°

    Partly cloudy

    Driving Weather
    • Precip
      1%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Today

    Dec 20

    40°Lo 25°

    Mostly cloudy

    Excellent for driving
    • Precip
      4%
    • Hours of Precip
      0
    • Rain
      0 in
  • Sun

    Dec 21

    44°Lo 29°

    Partly sunny

    Excellent for driving
    • Precip
      4%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Mon

    Dec 22

    43°Lo 39°

    Cloudy, afternoon rain

    Good for driving
    • Precip
      90%
    • Hours of Precip
      9
    • Rain
      0.70 in
    more
  • Tue

    Dec 23

    54°Lo 47°

    Cloudy with a bit of rain

    Good for driving
    • Precip
      55%
    • Hours of Precip
      6
    • Rain
      0.32 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
1pm
2pm 3pm 4pm 5pm 6pm 7pm 8pm
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Forecast
Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Cloudy
Partly Cloudy
Mostly Clear
Mostly Clear
Temp (°F) 38° 39° 40° 39° 37° 35° 32° 30°
RealFeel® 41° 42° 41° 39° 38° 36° 34° 32°
Humidity 46% 45% 46% 49% 54% 61% 66% 70%
   
  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm
Wind (mph) 2 WNW 2 NW 2 NW 2 NW 2 NNW 2 NNW 1 NNW 1 NNW
UV Index 1 1 0 0 0 0 0 0
Cloud Cover 93% 86% 77% 65% 51% 38% 28% 26%
Dew Point 19° 20° 20° 21° 22° 23° 22° 22°
Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 40° 45° 66° (1889) 60°
Low 25° 31° (1942) 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:24 AM with 9:25 of sunlight, then sets at 4:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:38 AM with 10:20 of moolight, then sets at 3:58 PM

Rockville Weather Report

DC: Quiet Weekend Weather to be Followed by Christmas Eve Storm

December 19, 2014; 2:11 PM ET

Following benign weather this weekend, a major storm will affect Washington, D.C., much of the East and Midwest on Christmas Eve. more >

Travel Weather Forecast

Dec 19, 2014; 9:14 PM ET United States travel weather forecast

Sat. Travel Weather

48 Hour Precipitation Forecast

Sat. Driving Weather