• Today

    Dec 21

    42°Lo 26°

    Clouds giving way to some sun

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

    Dec 22

    39°Lo 34°

    Cloudy with rain developing

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

    Dec 23

    46°Lo 43°

    Mainly cloudy and damp

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

    Dec 24

    60°Lo 47°

    Rain and a t-storm; warmer

    Low ragweed pollen levels
    • Precip
      75%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      99%
    more
  • Thu

    Dec 25

    52°Lo 32°

    Partly sunny and windy

    Ragweed Pollen Weather
    • Precip
      20%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      34%
    more
Next Previous
Hi 42° RealFeel® 45° Precipitation 1%

Day

N

E

S

W

  • NNW 2 mph
  • Gusts: 4 mph

Clouds giving way to some sun

  • Max UV Index: 2 (Low)
  • 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 26° RealFeel® 26° Precipitation 14%

Night

N

E

S

W

  • N 2 mph
  • Gusts: 5 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

Gaithersburg Pollen Levels - December 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 42° 44° 70° (2013) 70°
Low 26° 26° (1989) 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:24 AM with 9:25 of sunlight, then sets at 4:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:39 AM with 10:15 of moolight, then sets at 4:54 PM

Gaithersburg Weather Report

DC: Quiet Weekend Weather to be Followed by Christmas Eve Storm

December 21, 2014; 4:20 AM ET

Following benign weather this weekend, a major storm will affect Washington, D.C., much of the East and Midwest on Christmas Eve. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps