• Tonight

    Jul 31

    Lo 69°

    Clear and less humid

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Sat

    Aug 1

    88°Lo 65°

    Sun mixing with clouds

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Aug 2

    89°Lo 70°

    Sunny to partly cloudy

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Aug 3

    93°Lo 70°

    Partly sunny and hot

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Tue

    Aug 4

    90°Lo 69°

    A thunderstorm in the area

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
9pm
10pm 11pm Sat
12am
1am 2am 3am 4am
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Clear
Clear
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 79° 77° 75° 73° 72° 72° 71° 70°
RealFeel® 77° 76° 74° 72° 72° 71° 69° 69°
Humidity 55% 64% 68% 69% 73% 74% 75% 78%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Rain
 
3%
 
3%
 
3%
 
3%
 
3%
 
3%
 
3%
 
3%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Wind (mph) 6 NW 6 NW 6 WNW 5 W 5 WSW 5 WSW 5 WSW 5 WSW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 10% 10% 10% 7% 7% 10% 10% 10%
Dew Point 62° 64° 64° 62° 63° 64° 63° 63°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 89° 88° 103° (1954) 89°
Low 69° 71° 52° (1895) 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:08 AM with 14:13 of sunlight, then sets at 8:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:23 PM with 11:08 of moolight, then sets at 7:31 AM

Arlington Weather Report

DC, Baltimore: Hot, Dry Weather to Last Through Weekend

July 31, 2015; 8:56 PM ET

Humidity will ease across the region, but there is not much relief in sight for the hot weather. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Fri. Snow Day Potential