• Sun

    Sep 4

    76°Lo 61°

    Sunny and pleasant

    Beneficial weather for migraines
    • Hi
      RealFeel
      80°
    • UV
      5 - High
    • Cloud
      Cover
      5%
    more
  • Mon

    Sep 5

    87°Lo 60°

    Abundant sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      91°
    • UV
      5 - High
    • Cloud
      Cover
      4%
    more
  • Tue

    Sep 6

    88°Lo 65°

    Plenty of sunshine

    Beneficial weather for migraines
    • Hi
      RealFeel
      92°
    • UV
      5 - High
    • Cloud
      Cover
      23%
    more
  • Wed

    Sep 7

    90°Lo 66°

    Mostly sunny and very warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      91°
    • UV
      5 - High
    • Cloud
      Cover
      57%
  • Thu

    Sep 8

    91°Lo 68°

    Partly sunny

    Beneficial weather for migraines
    • Hi
      RealFeel
      94°
    • UV
      5 - High
    • Cloud
      Cover
      41%
    more
Next Previous
Hi 90° RealFeel® 91° Precipitation 1%

Day

N

E

S

W

  • NNE 6 mph
  • Gusts: 20 mph

Mostly sunny and very warm

  • Max UV Index: 6 (High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 66° RealFeel® 64° Precipitation 2%

Night

N

E

S

W

  • N 5 mph
  • Gusts: 13 mph

Increasing cloudiness

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • 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 7

more Historical Weather Data >
  Today Normal Record 9/7/2015
High 90° 83° 95° (1983) 90°
Low 66° 60° 41° (1976) 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:44 AM with 12:45 of sunlight, then sets at 7:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:27 PM with 10:40 of moolight, then sets at 11:07 PM

Herndon Weather Report

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

August 30, 2016; 10:24 PM ET

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