• Early AM

    Aug 31

    Lo 69°

    Mostly cloudy

    Driving Weather
    • Precip
      25%
    • Hours of Precip
      0.5
    • Rain
      0.02 in
    more
  • Today

    Aug 31

    87°Lo 66°

    Humid with variable clouds

    Excellent for driving
    • Precip
      6%
    • Hours of Precip
      0
    • Rain
      0 in
  • Tue

    Sep 1

    91°Lo 68°

    Hot with plenty of sunshine

    Very Good for driving
    • Precip
      10%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Wed

    Sep 2

    91°Lo 69°

    Humid with clouds and sun

    Very Good for driving
    • Precip
      40%
    • Hours of Precip
      0.5
    • Rain
      0.04 in
    more
  • Thu

    Sep 3

    91°Lo 69°

    A thunderstorm in the area

    Good for driving
    • Precip
      9%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°F) 72° 72° 71° 69° 71° 72° 75° 78°
RealFeel® 73° 72° 72° 69° 73° 75° 79° 82°
Humidity 78% 79% 81% 87% 85% 81% 75% 65%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
20%
 
20%
 
20%
 
20%
 
16%
 
7%
 
7%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 4 SSW 4 SSW 4 SSW 4 SW 4 SW 4 WSW 5 W 5 W
UV Index 0 0 0 0 0 1 1 3
Cloud Cover 94% 94% 94% 94% 94% 70% 70% 70%
Dew Point 65° 65° 65° 65° 67° 66° 67° 65°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2014
High 87° 84° 100° (1953) 96°
Low 66° 68° 49° (1934) 77°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 13:05 of sunlight, then sets at 7:41 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:58 PM with 12:57 of moolight, then sets at 9:55 AM

Rockville Weather Report

DC, Baltimore: Sizzling Heat Wave to Start September

August 31, 2015; 1:20 AM ET

A push of summery heat and humidity will arrive in the Washington D.C. and Baltimore areas this week as September begins. more >

Travel Weather Forecast

Aug 30, 2015; 6:26 PM ET United States travel weather forecast

Mon. Travel Weather

48 Hour Precipitation Forecast

Mon. Driving Weather