• Today

    Apr 18

    80°Lo 50°

    Mostly sunny and very warm

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

    Apr 19

    62°Lo 51°

    Becoming cloudy and cooler

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

    Apr 20

    75°Lo 51°

    A heavy t-storm in the p.m.

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

    Apr 21

    65°Lo 42°

    Sunshine

    Low ragweed pollen levels
    • Precip
      15%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      11%
    more
  • Wed

    Apr 22

    66°Lo 43°

    More sunshine than clouds

    Ragweed Pollen Weather
    • Precip
      19%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      33%
    more
Next Previous
Hi 80° RealFeel® 85° Precipitation 6%

Day

N

E

S

W

  • NNW 4 mph
  • Gusts: 8 mph

Mostly sunny and very warm; a beautiful start to the weekend

  • Max UV Index: 7 (High)
  • 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 50° RealFeel® 46° Precipitation 22%

Night

N

E

S

W

  • NNE 6 mph
  • Gusts: 10 mph

Partly 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

    High

  • Mold

    Pollen

    Low

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 80° 68° 95° (1976) 57°
Low 50° 48° 25° (1875) 39°

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 6:26 AM with 13:28 of moolight, then sets at 7:54 PM

Rockville Weather Report

DC: Rain to Close Out Weekend; Stormy Monday Follows

April 18, 2015; 11:03 AM 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 >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps