• Tonight

    Sep 20

    Lo 66°

    Partly cloudy

    Driving Weather
    • Precip
      2%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Sun

    Sep 21

    87°Lo 65°

    A t-storm in the afternoon

    Very Good for driving
    • Precip
      55%
    • Hours of Precip
      2
    • Rain
      0.16 in
  • Mon

    Sep 22

    75°Lo 54°

    Mostly sunny and not as warm

    Excellent for driving
    • Precip
      6%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Tue

    Sep 23

    73°Lo 58°

    Mostly sunny and beautiful

    Excellent for driving
    • Precip
      0%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Wed

    Sep 24

    76°Lo 62°

    Sunny and beautiful

    Excellent for driving
    • Precip
      9%
    • Hours of Precip
      0
    • Rain
      0 in
    more
Next Previous
Hi 87° RealFeel® 87° Precipitation 55%

Day

N

E

S

W

  • S 5 mph
  • Gusts: 12 mph

Very warm and humid with partial sunshine; a shower or thunderstorm late in the afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 65° RealFeel® 61° Precipitation 58%

Night

N

E

S

W

  • WNW 7 mph
  • Gusts: 10 mph

An evening shower or thunderstorm around; otherwise, partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.06 in
  • Rain: 0.06 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 87° 78° 96° (1895) 80°
Low 65° 60° 41° (1956) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:55 AM with 12:12 of sunlight, then sets at 7:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:28 AM with 13:13 of moolight, then sets at 5:41 PM

Top Story

Spring Valley Weather Report

DC: September Temperature Roller Coaster to Continue

September 20, 2014; 2:04 AM ET

In keeping with tradition, temperatures will continue their up-and-down cycle during the second half of September around Washington, D.C. more >

Travel Weather Forecast

Sep 20, 2014; 11:53 AM ET United States travel weather forecast

Sun. Travel Weather

48 Hour Precipitation Forecast

Sun. Driving Weather