• Early AM

    May 23

    Lo 68°

    A shower or thunderstorm

    Dust & Dander Weather
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more
  • Today

    May 23

    80°Lo 61°

    Heavy t-storms this afternoon

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more
  • Fri

    May 24

    62°Lo 46°

    Colder; a morning shower

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
  • Sat

    May 25

    65°Lo 46°

    Partly sunny, windy and cool

    Extreme indoor dust & dander levels
    • Precip
      0%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      26%
    more
  • Sun

    May 26

    71°Lo 44°

    Mostly sunny and pleasant

    Very High indoor dust & dander levels
    • Precip
      5%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      11%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Cloudy
Cloudy
Cloudy
Showers
Showers
Cloudy
Showers
Cloudy
Temp (°F) 65° 64° 63° 62° 61° 61° 62° 62°
RealFeel® 62° 62° 61° 59° 57° 57° 56° 58°
Humidity 84% 84% 85% 85% 84% 83% 80% 78%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
24%
 
19%
 
24%
 
51%
 
51%
 
43%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 3 WNW 4 WNW 4 WNW 4 WNW 6 NW 7 NW 8 NW 10 NW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 94% 94% 94% 94% 94% 94% 90% 90%
Dew Point 60° 59° 58° 58° 57° 56° 55° 55°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - May 24

more Historical Weather Data >
  Today Normal Record 5/24/2012
High 62° 78° 92° (1964) 83°
Low 46° 59° 41° (1905) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:49 AM with 14:33 of sunlight, then sets at 8:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:02 PM with 10:10 of moolight, then sets at 6:12 AM

Top Story

Rockville Weather Report

Severe Storms From Virginia to Maine Thursday

May 22, 2013; 6:12 PM ET

The same storm system responsible for producing violent thunderstorms in Oklahoma recently will reach the Atlantic Seaboard later Thursday. more >

Smoke Alert: The Hidden Dangers of E-Cigarettes

May 20, 2013; 5:00 AM ET E-cigarette manufacturers claim the devices can help a person quit smoking but have those claims ever been proven?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps