• Tonight

    Sep 21

    Lo 61°

    An evening t-storm in spots

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      4 mph
  • Mon

    Sep 22

    71°Lo 52°

    Mostly sunny and not as warm

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      12 mph
    more
  • Tue

    Sep 23

    70°Lo 56°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      72°
    • Wind
      Speed
      5 mph
    more
  • Wed

    Sep 24

    73°Lo 60°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      6 mph
    more
  • Thu

    Sep 25

    71°Lo 57°

    Pleasant with clouds and sun

    Poor for home energy
    • Avg
      RealFeel
      64°
    • Hi
      RealFeel
      72°
    • Wind
      Speed
      6 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
6pm
7pm 8pm 9pm 10pm 11pm Mon
12am
1am
  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Forecast
Partly Sunny
Partly Cloudy
Partly Cloudy
Partly Cloudy
T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 79° 77° 75° 73° 70° 70° 70° 70°
RealFeel® 76° 75° 72° 70° 66° 67° 66° 65°
Humidity 57% 63% 65% 69% 85% 82% 78% 73%
   
  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Rain
 
1%
 
4%
 
43%
 
47%
 
51%
 
20%
 
15%
 
17%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  6pm 7pm 8pm 9pm 10pm 11pm 12am 1am
Wind (mph) 5 ESE 5 ESE 5 SE 5 S 6 SW 7 WSW 7 W 7 W
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 48% 56% 35% 42% 68% 49% 42% 33%
Dew Point 63° 64° 63° 63° 66° 65° 63° 61°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 79° 79° 90° (1998) 75°
Low 61° 62° 33° (1956) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:53 AM with 12:12 of sunlight, then sets at 7:05 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:26 AM with 13:13 of moolight, then sets at 5:39 PM

Top Story

Chesapeake Beach Weather Report

DC: September Temperature Roller Coaster to Continue

September 21, 2014; 4:44 AM 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