• Early AM

    Jul 23

    Lo 69°

    Partly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      80°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      4 mph
    more
  • Today

    Jul 23

    92°Lo 69°

    A strong afternoon t-storm

    Fair for home energy
    • Avg
      RealFeel
      83°
    • Hi
      RealFeel
      100°
    • Wind
      Speed
      5 mph
    more
  • Thu

    Jul 24

    81°Lo 59°

    A couple of thunderstorms

    Poor for home energy
    • Avg
      RealFeel
      71°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      6 mph
  • Fri

    Jul 25

    84°Lo 62°

    Sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      75°
    • Hi
      RealFeel
      89°
    • Wind
      Speed
      4 mph
    more
  • Sat

    Jul 26

    87°Lo 69°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      79°
    • Hi
      RealFeel
      90°
    • Wind
      Speed
      6 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
T-storms
Mostly Cloudy
T-storms
Mostly Cloudy
Partly Cloudy
T-storms
Temp (°F) 73° 74° 75° 78° 79° 80° 81° 79°
RealFeel® 73° 75° 77° 82° 82° 84° 84° 80°
Humidity 75% 69% 68% 61% 61% 56% 52% 57%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
34%
 
40%
 
58%
 
49%
 
58%
 
49%
 
48%
 
52%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 6 NNW 7 NNW 7 NNW 7 NNW 7 NNW 7 NNW 7 NNW 7 NNW
UV Index 2 3 5 6 6 6 5 4
Cloud Cover 87% 85% 83% 82% 80% 77% 72% 66%
Dew Point 64° 63° 64° 64° 64° 63° 62° 63°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Jul 24

more Historical Weather Data >
  Today Normal Record 7/24/2013
High 81° 88° 101° (2010) 86°
Low 59° 71° 57° (1947) 74°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:02 AM with 14:26 of sunlight, then sets at 8:28 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:08 AM with 14:33 of moolight, then sets at 6:41 PM

Top Story

Rockville Weather Report

DC: Another Cooldown to Follow Midweek Storms

July 22, 2014; 3:02 PM ET

Just when it was starting to feel like the dog days of summer again, another push of cool air is taking aim on the Washington, D.C., area. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Thu. Home Energy Efficiency

Thu. Degree Days

Thu. UV Index