• Tonight

    Aug 31

    Lo 69°

    A thunderstorm in the area

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

    Sep 1

    80°Lo 61°

    Not as warm with a t-storm

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

    Sep 2

    79°Lo 63°

    Partly sunny and less humid

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

    Sep 3

    70°Lo 61°

    Rain possible in the p.m.

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

    Sep 4

    67°Lo 61°

    Mostly cloudy, rain possible

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 80° RealFeel® 87° Precipitation 56%

Day

N

E

S

W

  • NNW 6 mph
  • Gusts: 8 mph

Some sun returning; not as warm with a shower or thunderstorm around into the early afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.13 in
  • Rain: 0.13 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 61° RealFeel® 60° Precipitation 14%

Night

N

E

S

W

  • N 6 mph
  • Gusts: 8 mph

Partly cloudy and less humid

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

Rockville Pollen Levels - September 1

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Tree Pollen

    Low

  • Ragweed Pollen

    Moderate

  • Mold

    High

  • Grass Pollen

    Moderate

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2015
High 80° 81° N/A 91°
Low 61° 65° N/A 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 13:00 of sunlight, then sets at 7:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:47 AM with 13:06 of moolight, then sets at 7:53 PM

Rockville Weather Report

Warm fall may jeopardize foliage displays in northeastern US

August 31, 2016; 8:05 PM ET

Though the summer season is winding down, forecasters are predicting a warm start to fall across the Northeast — a weather pattern that could spell bad news for fall foliage lovers. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps