• Tonight

    Sep 21

    Lo 58°

    An evening t-storm in spots

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      4 mph
  • Mon

    Sep 22

    70°Lo 47°

    Partly sunny; breezy, cooler

    Poor for home energy
    • Avg
      RealFeel
      57°
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      12 mph
    more
  • Tue

    Sep 23

    70°Lo 50°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      72°
    • Wind
      Speed
      4 mph
    more
  • Wed

    Sep 24

    74°Lo 56°

    Sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      5 mph
    more
  • Thu

    Sep 25

    72°Lo 55°

    Pleasant with clouds and sun

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      4 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
11pm
Mon
12am
1am 2am 3am 4am 5am 6am
  11pm 12am 1am 2am 3am 4am 5am 6am
Forecast
Mostly Cloudy
Cloudy
Cloudy
Partly Cloudy
Partly Cloudy
Mostly Clear
Mostly Clear
Partly Cloudy
Temp (°F) 73° 70° 68° 66° 64° 62° 61° 59°
RealFeel® 68° 65° 63° 61° 61° 59° 57° 56°
Humidity 65% 67% 70% 67% 67% 70% 72% 75%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
Rain
 
40%
 
34%
 
29%
 
20%
 
20%
 
20%
 
20%
 
20%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
Wind (mph) 9 NW 8 NW 8 NW 7 NW 6 NW 5 WNW 6 WNW 6 WNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 83% 67% 51% 48% 40% 25% 25% 40%
Dew Point 61° 59° 58° 55° 53° 53° 52° 51°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 88° 77° N/A 74°
Low 58° 54° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:57 AM with 12:12 of sunlight, then sets at 7:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:30 AM with 13:13 of moolight, then sets at 5:43 PM

Top Story

Leesburg Weather Report

DC: September Temperature Roller Coaster to Continue

September 21, 2014; 9:44 PM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Washington, D.C. 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.

Sun. Home Energy Efficiency

Sun. Degree Days

Sun. UV Index