• Tonight

    Dec 18

    Lo 30°

    Mostly cloudy

    Common Cold Weather
    • Avg
      Temp
      35°
    • Avg
      RealFeel
      27°
    • Hi
      RealFeel
      30°
  • Fri

    Dec 19

    43°Lo 26°

    Sunshine and patchy clouds

    Beneficial weather for colds
    • Avg
      Temp
      35°
    • Avg
      RealFeel
      31°
    • Hi
      RealFeel
      36°
    more
  • Sat

    Dec 20

    41°Lo 27°

    Mostly cloudy

    Beneficial weather for colds
    • Avg
      Temp
      34°
    • Avg
      RealFeel
      35°
    • Hi
      RealFeel
      44°
    more
  • Sun

    Dec 21

    44°Lo 30°

    Partly sunny

    Beneficial weather for colds
    • Avg
      Temp
      37°
    • Avg
      RealFeel
      38°
    • Hi
      RealFeel
      47°
    more
  • Mon

    Dec 22

    43°Lo 37°

    Rain

    Neutral weather for colds
    • Avg
      Temp
      40°
    • Avg
      RealFeel
      34°
    • Hi
      RealFeel
      36°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
6am
7am 8am 9am 10am 11am 12pm 1pm
  6am 7am 8am 9am 10am 11am 12pm 1pm
Forecast
Cloudy
Partly Cloudy
Partly Sunny
Partly Sunny
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 30° 31° 31° 33° 36° 37° 38° 38°
RealFeel® 20° 21° 22° 22° 28° 29° 30° 29°
Humidity 66% 64% 61% 56% 50% 49% 47% 48%
   
  6am 7am 8am 9am 10am 11am 12pm 1pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  6am 7am 8am 9am 10am 11am 12pm 1pm
Wind (mph) 10 NW 10 WNW 9 NW 13 NW 10 WNW 12 WNW 12 NW 13 NNW
UV Index 0 0 0 1 1 1 1 1
Cloud Cover 58% 35% 36% 32% 79% 81% 82% 81%
Dew Point 20° 20° 20° 19° 19° 19° 20° 20°
Middle Grid line 40 F Middle Grid line 35 F Middle Grid line 30 F Middle Grid line 25 F

Temperature History - Dec 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 39° 46° 74° (2006) 44°
Low 30° 32° 10° (1926) 32°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 9:26 of sunlight, then sets at 4:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:35 AM with 10:50 of moolight, then sets at 2:25 PM

Rockville Weather Report

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

December 18, 2014; 9:11 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 >

Natural Ways To Combat Colds and Flu

Nov 30, 2012; 5:00 AM ET Flu season is here and will stick around until May. Here are a few natural remedies to ease pain and suffering.

Thu. Cold & Flu

Thu. UV Index