• Tonight

    Apr 17

    Lo 35°

    Some clouds; cold

    Dust & Dander Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Fri

    Apr 18

    56°Lo 42°

    Mostly cloudy

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Sat

    Apr 19

    69°Lo 41°

    Partly sunny and warmer

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sun

    Apr 20

    64°Lo 42°

    Intervals of clouds and sun

    Low indoor dust & dander levels
    • Precip
      4%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      47%
    more
  • Mon

    Apr 21

    70°Lo 46°

    Some sun

    Low indoor dust & dander levels
    • Precip
      10%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      45%
    more
Next Previous
Hi 56° RealFeel® 62° Precipitation 7%

Day

N

E

S

W

  • NW 4 mph
  • Gusts: 6 mph

Mostly cloudy

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 42° RealFeel® 42° Precipitation 25%

Night

N

E

S

W

  • NNW 2 mph
  • Gusts: 4 mph

Mostly cloudy

  • 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 - April 18

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2013
High 56° 68° 95° (1976) 78°
Low 42° 48° 25° (1875) 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:28 AM with 13:21 of sunlight, then sets at 7:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:31 PM with 10:13 of moolight, then sets at 9:44 AM

Top Story

Rockville Weather Report

DC: Turn to Milder Weather Into Easter Weekend

April 17, 2014; 1:00 PM ET

The return of noticeably milder air to Washington, D.C., will coincide with this Easter weekend. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps