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  • Today

    Aug 20

    A thunderstorm in spots 86°Lo 66°
    more
  • Thu

    Aug 21

    A couple of thunderstorms 87°Lo 68°
  • Fri

    Aug 22

    A couple of thunderstorms 85°Lo 68°
    more
  • Sat

    Aug 23

    A brief shower or two 78°Lo 67°
    more
  • Sun

    Aug 24

    Times of clouds and sun 78°Lo 65°
    more
< Previous 8 hours Next 8 hours >
  Thu
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
T-storms
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°F) 71° 70° 69° 68° 66° 67° 67° 68°
RealFeel® 70° 69° 68° 67° 64° 66° 66° 68°
Humidity 86% 88% 91% 93% 93% 93% 93% 93%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
33%
 
36%
 
43%
 
47%
 
51%
 
40%
 
34%
 
37%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 3 SSE 3 SSE 3 SSE 3 SSE 2 SSE 2 ESE 2 SE 2 SSE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 84% 76% 76% 76% 76% 77% 78% 76%
Dew Point 66° 66° 66° 66° 64° 65° 65° 66°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 87° 86° 100° (1874) 89°
Low 68° 69° 53° (1908) 73°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 13:29 of sunlight, then sets at 7:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:57 AM with 14:25 of moolight, then sets at 5:22 PM

Top Story

Rockville Weather Report

DC: Downpour, Flooding Risk to Increase Into Thursday

August 20, 2014; 3:08 AM ET

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

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