• Early AM

    Apr 18

    Lo 39°

    Cloudy

    Dust & Dander Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Today

    Apr 18

    56°Lo 31°

    Partly sunny

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

    Apr 19

    66°Lo 43°

    Partly sunny

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

    Apr 20

    73°Lo 51°

    Mostly cloudy

    Low indoor dust & dander levels
    • Precip
      19%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      76%
    more
  • Mon

    Apr 21

    68°Lo 46°

    Mostly cloudy with showers

    Low indoor dust & dander levels
    • Precip
      86%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      78%
Next Previous
Mostly cloudy 51° Lo 46° RealFeel® 45° / 38°

N

E

S

W

  • Precipitation: 19%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 85%
  • Cloud Cover: 71%
  • Dew Point: 44° F
  • Visibility: 10 mi
9 mph

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 68° 59° N/A 48°
Low 46° 37° N/A 27°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:03 AM with 13:38 of sunlight, then sets at 7:41 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:13 AM with 10:15 of moolight, then sets at 11:28 AM

Top Story

Crystal Lake Weather Report

Chicago: Weekend Warmth on the Way

April 17, 2014; 5:44 PM ET

Despite a chilly Friday, seasonal warmth will return to the city right in time for the holiday 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?

Mon. Dust & Dander

Mon. Wind Maps