• Early AM

    Dec 18

    Lo 30°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Dec 18

    43°Lo 30°

    Partly sunny and breezy

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Dec 19

    43°Lo 27°

    Times of sun and clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Dec 20

    41°Lo 31°

    Mostly cloudy

    Low ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      91%
    more
  • Sun

    Dec 21

    44°Lo 31°

    Clouds giving way to some sun

    Low ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      2 mph
    • Cloud
      Cover
      66%
    more
Next Previous
< Previous 8 hours Next 8 hours >
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Forecast
Cloudy
Cloudy
Partly Cloudy
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Partly Cloudy
Mostly Clear
Mostly Sunny
Mostly Sunny
Temp (°F) 33° 33° 32° 31° 30° 30° 31° 34°
RealFeel® 22° 22° 20° 19° 19° 20° 18° 20°
Humidity 65% 64% 64% 65% 66% 65% 62% 56%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
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Snow
 
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Ice
 
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  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 12 NW 12 NW 13 NW 12 NW 10 WNW 10 WNW 14 WNW 16 WNW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 60% 53% 44% 38% 32% 27% 26% 26%
Dew Point 22° 22° 21° 20° 20° 20° 20° 19°
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 43° 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: Spotty Wintry Weather This Weekend to be Paled by Major Storm Next Week

December 17, 2014; 4:05 PM ET

After a weak storm brings spotty light snow and rain to the region this weekend, another storm will threaten major travel disruptions around Washington, D.C., before Christmas. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps