• Early AM

    Sep 20

    Lo 61°

    Areas of fog

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      69°
    • Hi
      RealFeel
      77°
    • Wind
      Speed
      3 mph
    more
  • Today

    Sep 20

    81°Lo 57°

    Clouds breaking for some sun

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      5 mph
    more
  • Sun

    Sep 21

    86°Lo 57°

    A t-storm in the afternoon

    Poor for home energy
    • Avg
      RealFeel
      71°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      5 mph
  • Mon

    Sep 22

    74°Lo 47°

    Partly sunny and not as warm

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      74°
    • Wind
      Speed
      8 mph
    more
  • Tue

    Sep 23

    73°Lo 50°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      4 mph
    more
Next Previous
Hi 86° RealFeel® 87° Precipitation 58%

Day

N

E

S

W

  • SW 5 mph
  • Gusts: 11 mph

Partly sunny and warm; a shower or thunderstorm around in the afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.09 in
  • Rain: 0.09 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 57° RealFeel® 55° Precipitation 56%

Night

N

E

S

W

  • W 4 mph
  • Gusts: 8 mph

Partly cloudy with a shower

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.07 in
  • Rain: 0.07 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 86° 78° N/A 73°
Low 57° 57° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:56 AM with 12:13 of sunlight, then sets at 7:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:29 AM with 13:14 of moolight, then sets at 5:43 PM

Top Story

Frederick Weather Report

DC: September Temperature Roller Coaster to Continue

September 19, 2014; 12:00 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