• Today

    Aug 28

    88°Lo 65°

    Sunshine, very warm and humid

    Excellent for an outdoor bbq
    • Precip
      1%
    • Hi
      RealFeel
      94°
    • Wind
      Speed
      5 mph
    more
  • Mon

    Aug 29

    90°Lo 66°

    Partly sunny and hot

    Excellent for an outdoor bbq
    • Precip
      10%
    • Hi
      RealFeel
      99°
    • Wind
      Speed
      2 mph
    more
  • Tue

    Aug 30

    86°Lo 65°

    Mostly sunny

    Excellent for an outdoor bbq
    • Precip
      15%
    • Hi
      RealFeel
      95°
    • Wind
      Speed
      5 mph
    more
  • Wed

    Aug 31

    89°Lo 66°

    A p.m. t-storm in spots

    Excellent for an outdoor bbq
    • Precip
      54%
    • Hi
      RealFeel
      96°
    • Wind
      Speed
      4 mph
  • Thu

    Sep 1

    82°Lo 58°

    Partly to mostly sunny

    Excellent for an outdoor bbq
    • Precip
      7%
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      7 mph
    more
Next Previous
Hi 89° RealFeel® 96° Precipitation 54%

Day

N

E

S

W

  • SSW 4 mph
  • Gusts: 6 mph

Intervals of clouds and sun with a shower or thunderstorm in spots in the afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 60%
  • Precipitation: 0.21 in
  • Rain: 0.21 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 66° RealFeel® 66° Precipitation 25%

Night

N

E

S

W

  • NNE 5 mph
  • Gusts: 7 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2015
High 89° 81° N/A 88°
Low 66° 65° N/A 72°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 13:03 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:48 AM with 13:31 of moolight, then sets at 7:19 PM

Rockville Weather Report

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

August 28, 2016; 4:04 AM ET

Brief relief from heat and humidity will arrive in the northeastern United States at the start of September. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.

Wed. Outdoor Entertaining

Wed. Wind Maps

Wed. UV Index