• Tonight

    Aug 27

    Lo 66°

    Mainly clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Aug 28

    88°Lo 65°

    Mostly sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Aug 29

    90°Lo 67°

    Partly sunny

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    Aug 30

    86°Lo 66°

    Partly sunny

    Moderate ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
  • Wed

    Aug 31

    89°Lo 67°

    A p.m. t-storm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 86° RealFeel® 93° Precipitation 11%

Day

N

E

S

W

  • ESE 4 mph
  • Gusts: 7 mph

Partly sunny

  • Max UV Index: 6 (High)
  • Thunderstorms: 7%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 66° RealFeel® 66° Precipitation 16%

Night

N

E

S

W

  • SSE 4 mph
  • Gusts: 7 mph

Mainly clear

  • Max UV Index: N/A
  • Thunderstorms: 7%
  • 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 30

more Historical Weather Data >
  Today Normal Record 8/30/2015
High 86° 81° N/A 88°
Low 66° 65° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 13:05 of sunlight, then sets at 7:41 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:46 AM with 13:57 of moolight, then sets at 6:43 PM

Rockville Weather Report

More summery days await the northeastern US into September

August 27, 2016; 5:24 PM ET

Summer heat has returned to the northeastern United States and will continue to dominate most days into September. more >

Tue. Dust & Dander

Tue. Wind Maps