• Early AM

    Sep 23

    Lo 44°

    Colder

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      56°
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      3 mph
    more
  • Today

    Sep 23

    70°Lo 48°

    Cool in the a.m.; sunny, nice

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      4 mph
  • Wed

    Sep 24

    74°Lo 55°

    Nice with clouds and sun

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

    Sep 25

    73°Lo 52°

    Periods of rain

    Poor for home energy
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      72°
    • Wind
      Speed
      4 mph
    more
  • Fri

    Sep 26

    78°Lo 51°

    Sunny to partly cloudy

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      79°
    • Wind
      Speed
      3 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
2am
3am 4am 5am 6am 7am 8am 9am
  2am 3am 4am 5am 6am 7am 8am 9am
Forecast
Partly Cloudy
Mostly Clear
Mostly Clear
Clear
Clear
Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 49° 47° 45° 45° 44° 46° 48° 53°
RealFeel® 47° 46° 45° 44° 43° 46° 48° 55°
Humidity 78% 80% 83% 86% 87% 85% 79% 69%
   
  2am 3am 4am 5am 6am 7am 8am 9am
Rain
 
0%
 
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0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
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0%
Ice
 
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  2am 3am 4am 5am 6am 7am 8am 9am
Wind (mph) 3 NNW 3 NNW 3 NNW 2 NNW 2 NNW 3 NNW 3 NNW 3 NNW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 38% 23% 12% 6% 3% 0% 10% 10%
Dew Point 42° 41° 40° 41° 40° 42° 42° 43°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Sep 23

more Historical Weather Data >
  Today Normal Record 9/23/2013
High 70° 77° N/A 67°
Low 48° 53° N/A 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:57 AM with 12:08 of sunlight, then sets at 7:05 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:20 AM with 12:22 of moolight, then sets at 6:42 PM

Top Story

Gaithersburg Weather Report

DC: September Temperature Roller Coaster to Continue

September 22, 2014; 1:29 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.

Tue. Home Energy Efficiency

Tue. Degree Days

Tue. UV Index