• Tonight

    Aug 30

    Lo 64°

    Clear to partly cloudy

    Travel Weather
    • Rain
      0 in
    • Wind
      Speed
      5 mph
    • T-storms
      1%
    more
  • Wed

    Aug 31

    89°Lo 69°

    Humid with clouds and sun

    Excellent for travel
    • Rain
      0.04 in
    • Wind
      Speed
      5 mph
    • T-storms
      13%
    more
  • Thu

    Sep 1

    83°Lo 61°

    Not as hot with a t-storm

    Excellent for travel
    • Rain
      0.29 in
    • Wind
      Speed
      7 mph
    • T-storms
      40%
  • Fri

    Sep 2

    79°Lo 61°

    Partly sunny and pleasant

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      9 mph
    • T-storms
      1%
    more
  • Sat

    Sep 3

    75°Lo 61°

    Sunny and pleasant

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      6 mph
    • T-storms
      2%
    more
Next Previous
Hi 83° RealFeel® 86° Precipitation 59%

Day

N

E

S

W

  • NNW 7 mph
  • Gusts: 12 mph

Clouds breaking and not as hot with a shower or thunderstorm around into the early afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.29 in
  • Rain: 0.29 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 61° RealFeel® 58° Precipitation 9%

Night

N

E

S

W

  • NW 7 mph
  • Gusts: 12 mph

Patchy clouds

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2015
High 83° 84° 98° (1980) 93°
Low 61° 62° 49° (1970) 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 13:00 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:48 AM with 13:06 of moolight, then sets at 7:54 PM

Herndon Weather Report

September to start on cooler, less humid note in northeastern US

August 30, 2016; 11:24 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States during the first days of September. more >

Travel Weather Forecast

Aug 30, 2016; 6:30 PM ET United States travel weather forecast

Flight Tracker