• Today

    Sep 18

    75°Lo 53°

    Delightful with some sun

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      2 mph
    • T-storms
      2%
    more
  • Fri

    Sep 19

    72°Lo 57°

    Fog in the a.m.; partly sunny

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      6 mph
    • T-storms
      0%
  • Sat

    Sep 20

    78°Lo 59°

    Periods of sun

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      5 mph
    • T-storms
      0%
    more
  • Sun

    Sep 21

    83°Lo 60°

    Partly sunny and warm

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

    Sep 22

    74°Lo 50°

    A shower possible

    Excellent for travel
    • Rain
      0 in
    • Wind
      Speed
      7 mph
    • T-storms
      15%
    more
Next Previous
Hi 72° RealFeel® 73° Precipitation 7%

Day

N

E

S

W

  • E 6 mph
  • Gusts: 11 mph

Areas of fog in the morning; otherwise, partly sunny

  • Max UV Index: 5 (Moderate)
  • 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 57° RealFeel® 56° Precipitation 16%

Night

N

E

S

W

  • SSE 4 mph
  • Gusts: 8 mph

Partly cloudy

  • 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 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 72° 78° 93° (1977) 79°
Low 57° 55° 36° (1984) 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:54 AM with 12:18 of sunlight, then sets at 7:12 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:40 AM with 13:57 of moolight, then sets at 4:37 PM

Top Story

Herndon Weather Report

DC: Remainder of Week to Be Dry, Cool

September 18, 2014; 7:11 AM ET

Rainfall will be scarce around Washington, D.C., this week, but cool air will be plentiful. more >

Travel Weather Forecast

Sep 18, 2014; 5:45 AM ET United States travel weather forecast

Fri. Travel Weather

Flight Tracker