• Wed

    Sep 2

    89°Lo 65°

    Brilliant sunshine and humid

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Sep 3

    87°Lo 70°

    Partial sunshine

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Fri

    Sep 4

    87°Lo 69°

    Some sunshine

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Sat

    Sep 5

    91°Lo 67°

    Mostly sunny and hot

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Sep 6

    87°Lo 69°

    Partly sunny

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
Hi 87° RealFeel® 90° Precipitation 8%

Day

N

E

S

W

  • N 6 mph
  • Gusts: 12 mph

Some sunshine

  • Max UV Index: 6 (High)
  • Thunderstorms: 14%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 69° RealFeel® 72° Precipitation 51%

Night

N

E

S

W

  • SE 4 mph
  • Gusts: 13 mph

Mostly cloudy with a thunderstorm in the area

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 87° 84° 95° (2008) 91°
Low 69° 66° 49° (1908) 74°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:55 of sunlight, then sets at 7:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:49 PM with 14:27 of moolight, then sets at 2:16 PM

Rockville Weather Report

DC, Baltimore: Heat, Humidity to Come Back Into Next Week

August 28, 2015; 10:44 AM ET

Heat and humidity will return to Washington D.C. and Baltimore areas this weekend and hang on into next week. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.