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  • Tonight

    Aug 29

    Partly cloudy and humid Lo 64°
    more
  • Sun

    Aug 30

    Some sun; very warm, humid 89°Lo 68°
  • Mon

    Aug 31

    Sunshine and some clouds 88°Lo 67°
    more
  • Tue

    Sep 1

    Mostly sunny, hot and humid 92°Lo 68°
    more
  • Wed

    Sep 2

    Clouds and sun; hot and humid 91°Lo 68°
    more
< Previous 8 hours Next 8 hours >
  Sun
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Partly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 67° 69° 73° 77° 82° 85° 86° 87°
RealFeel® 65° 70° 80° 86° 92° 97° 98° 95°
Humidity 77% 77% 71% 60% 53% 49% 45% 42%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
1%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 4 SSW 4 SW 0 0 0 0 0 4 SW
UV Index 0 1 2 3 5 6 6 6
Cloud Cover 39% 26% 26% 30% 41% 45% 45% 45%
Dew Point 59° 62° 63° 62° 63° 64° 62° 62°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 30

more Historical Weather Data >
  Today Normal Record 8/30/2014
High 89° 85° 99° (1991) 80°
Low 68° 62° 41° (1986) 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 13:07 of sunlight, then sets at 7:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:19 PM with 12:25 of moolight, then sets at 8:44 AM

Herndon Weather Report

DC, Baltimore: Heat, Humidity to Come Back Into Next Week

August 29, 2015; 4:24 AM ET

Heat and humidity will return to Washington D.C. and Baltimore areas this weekend and hang on into next week. more >

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