• Today

    Aug 20

    86°Lo 66°

    A p.m. t-storm in spots

    Neutral weather for arthritis pain
    • Rain
      0.15 in
    • Hours of Precip
      2
    • UV
      6 - High
    more
  • Thu

    Aug 21

    87°Lo 68°

    A couple of thunderstorms

    Beneficial weather for arthritis pain
    • Rain
      0.35 in
    • Hours of Precip
      3.5
    • UV
      6 - High
    more
  • Fri

    Aug 22

    85°Lo 68°

    Couple of thunderstorms

    Neutral weather for arthritis pain
    • Rain
      0.32 in
    • Hours of Precip
      5
    • UV
      5 - Moderate
  • Sat

    Aug 23

    78°Lo 66°

    A shower or two; not as warm

    Neutral weather for arthritis pain
    • Rain
      0.19 in
    • Hours of Precip
      3
    • UV
      4 - Moderate
    more
  • Sun

    Aug 24

    78°Lo 64°

    Times of clouds and sun

    Beneficial weather for arthritis pain
    • Rain
      0.02 in
    • Hours of Precip
      1
    • UV
      4 - Moderate
    more
Next Previous
Hi 85° RealFeel® 94° Precipitation 60%

Day

N

E

S

W

  • NW 4 mph
  • Gusts: 6 mph

Mostly cloudy and humid with a couple of showers and a thunderstorm, mainly later

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.12 in
  • Rain: 0.12 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2.5 hrs
  • Hours of Rain: 2.5 hrs
Lo 68° RealFeel® 65° Precipitation 65%

Night

N

E

S

W

  • E 5 mph
  • Gusts: 7 mph

Cloudy and humid with a passing shower or two

  • Max UV Index: N/A
  • Thunderstorms: 29%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2.5 hrs
  • Hours of Rain: 2.5 hrs

Temperature History - Aug 22

more Historical Weather Data >
  Today Normal Record 8/22/2013
High 85° 86° 101° (1983) 88°
Low 68° 64° 51° (1969) 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:29 AM with 13:26 of sunlight, then sets at 7:55 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:51 AM with 14:10 of moolight, then sets at 6:01 PM

Top Story

Herndon Weather Report

DC: Downpour, Flooding Risk to Increase Into Thursday

August 20, 2014; 3:08 AM ET

A wedge of dry air will slowly erode at midweek and will allow showers and thunderstorms to survive the trip into Washington, D.C., from the Midwest. more >

Fri. Arthritis Pain

Fri. UV Index