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  • Today

    Jul 31

    Showers and a heavier t-storm 90°Lo 70°
  • Mon

    Aug 1

    A thunderstorm in spots 89°Lo 69°
    more
  • Tue

    Aug 2

    Periods of clouds and sun 87°Lo 66°
    more
  • Wed

    Aug 3

    Periods of clouds and sun 86°Lo 68°
    more
  • Thu

    Aug 4

    Periods of clouds and sun 88°Lo 69°
    more
A couple of showers and heavy thunderstorms 90° Lo 80° RealFeel® 100° / 86°

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  • Precipitation: 65%
  • Rain: 0.75 in
  • Snow: 0 in
  • Humidity: 68%
  • Cloud Cover: 70%
  • Dew Point: 73° F
  • Visibility: 7 mi
5 mph

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2015
High 90° 88° 98° (1999) 87°
Low 70° 66° 50° (1997) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 14:11 of sunlight, then sets at 8:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:56 AM with 14:37 of moolight, then sets at 6:33 PM

Herndon Weather Report

Soaking storms to elevate flash flood threat in northeastern US this weekend

July 31, 2016; 5:33 AM ET

Rounds of drenching showers and heavy thunderstorms will heighten the risk of flash flooding across the northeastern United States through the final weekend of July. more >

FOX 5 Washington D.C. Headlines

Major flash flooding in Ellicott City

Storms brought torrential rain to Howard County, Md. on Saturday night, causing severe flooding. Historic Ellicott City appears to have been hit hardest.

Juvenile shot in Southeast

Harry Potter parties in the DC area