• Early AM

    Aug 31

    Lo 63°

    Mainly clear

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

    Aug 31

    89°Lo 68°

    Very warm with periods of sun

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

    Sep 1

    82°Lo 59°

    Not as warm with a t-storm

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

    Sep 2

    77°Lo 61°

    Partly sunny

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

    Sep 3

    74°Lo 61°

    Pleasant with plenty of sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 77° RealFeel® 79° Precipitation 4%

Day

N

E

S

W

  • NNE 8 mph
  • Gusts: 12 mph

Partly sunny

  • Max UV Index: 6 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 61° RealFeel® 60° Precipitation 12%

Night

N

E

S

W

  • N 6 mph
  • Gusts: 9 mph

Clear

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

Temperature History - Sep 2

more Historical Weather Data >
  Today Normal Record 9/2/2015
High 77° 81° N/A 91°
Low 61° 64° N/A 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:57 of sunlight, then sets at 7:36 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:46 AM with 12:38 of moolight, then sets at 8:24 PM

Rockville Weather Report

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

August 30, 2016; 10:24 PM ET

Brief relief from heat and humidity will arrive in the northeastern United States during the first days of September. more >

Fri. Dust & Dander

Fri. Wind Maps