• Tonight

    Apr 19

    Lo 55°

    Breezy with rain, some heavy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Mon

    Apr 20

    75°Lo 51°

    A gusty t-storm in the p.m.

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Tue

    Apr 21

    69°Lo 45°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Wed

    Apr 22

    63°Lo 42°

    An afternoon shower or two

    Low ragweed pollen levels
    • Precip
      55%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      70%
    more
  • Thu

    Apr 23

    61°Lo 41°

    Partly sunny and breezy

    Ragweed Pollen Weather
    • Precip
      23%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      70%
    more
Next Previous
Hi 75° RealFeel® 76° Precipitation 55%

Day

N

E

S

W

  • SSW 16 mph
  • Gusts: 31 mph

Warmer; a heavy thunderstorm late in the afternoon; thunderstorms can bring hail and damaging winds

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 90%
  • Precipitation: 0.15 in
  • Rain: 0.15 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 51° RealFeel® 46° Precipitation 55%

Night

N

E

S

W

  • W 9 mph
  • Gusts: 20 mph

A heavy t-storm early; otherwise, clouds breaking; thunderstorms can bring hail and damaging winds

  • Max UV Index: N/A
  • Thunderstorms: 90%
  • Precipitation: 0.15 in
  • Rain: 0.15 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Rockville Pollen Levels - April 20

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 75° 68° 94° (1941) 64°
Low 51° 48° 28° (1904) 48°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 13:26 of sunlight, then sets at 7:51 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:53 AM with 14:16 of moolight, then sets at 10:09 PM

Rockville Weather Report

DC: Stormy Weather to Start the New Week

April 19, 2015; 4:29 PM ET

Saturday's warmth will be replaced by more clouds and the arrival of late-day rain on Sunday before the danger for violent storms returns on Monday. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps