• Today

    May 22

    90°Lo 67°

    A strong afternoon t-storm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
  • Thu

    May 23

    80°Lo 59°

    Showers and a heavier t-storm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more
  • Fri

    May 24

    63°Lo 43°

    Colder with showers around

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more
  • Sat

    May 25

    64°Lo 43°

    Partly sunny, windy and cool

    Extreme indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      26%
    more
  • Sun

    May 26

    73°Lo 39°

    Pleasant and warmer

    Very High indoor dust & dander levels
    • Precip
      5%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      11%
    more
Next Previous
Hi 90° RealFeel® 97° Precipitation 55%

Day

N

E

S

W

  • SW 6 mph
  • Gusts: 14 mph

Hot and humid with intervals of clouds and sunshine; a strong thunderstorm late this afternoon

  • Max UV Index: 7 (High)
  • Thunderstorms: 95%
  • 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 67° RealFeel® 65° Precipitation 55%

Night

N

E

S

W

  • S 5 mph
  • Gusts: 8 mph

A strong thunderstorm this evening; otherwise, warm and humid with considerable cloudiness

  • Max UV Index: N/A
  • Thunderstorms: 95%
  • Precipitation: 0.15 in
  • Rain: 0.15 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Frederick Pollen Levels - May 22

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

    Pollen

    Moderate

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 22

more Historical Weather Data >
  Today Normal Record 5/22/2012
High 90° 78° N/A 81°
Low 67° 56° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:50 AM with 14:33 of sunlight, then sets at 8:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:43 PM with 10:49 of moolight, then sets at 4:32 AM

Top Story

Frederick Weather Report

Severe Storms From Virginia to Maine Thursday

May 22, 2013; 9:52 AM ET

The same storm system responsible for producing violent thunderstorms in Oklahoma recently will reach the Atlantic Seaboard later Thursday. more >

Smoke Alert: The Hidden Dangers of E-Cigarettes

May 20, 2013; 5:00 AM ET E-cigarette manufacturers claim the devices can help a person quit smoking but have those claims ever been proven?

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps