• Today

    Sep 1

    82°Lo 60°

    Partly sunny with a t-storm

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

    Sep 2

    81°Lo 59°

    Periods of sun; less humid

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

    Sep 3

    85°Lo 68°

    Partly sunny

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
    more
  • Thu

    Sep 4

    86°Lo 69°

    Partly sunny, warm and humid

    High ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      13 mph
    • Cloud
      Cover
      69%
    more
  • Fri

    Sep 5

    79°Lo 59°

    Mostly cloudy, t-storms; warm

    Ragweed Pollen Weather
    • Precip
      67%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      83%
Next Previous
Cooler 69° Lo 64° RealFeel® 66° / 61°

N

E

S

W

  • Precipitation: 19%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 84%
  • Cloud Cover: 27%
  • Dew Point: 61° F
  • Visibility: 10 mi
6 mph

Temperature History - Sep 5

more Historical Weather Data >
  Today Normal Record 9/5/2013
High 79° 77° N/A 71°
Low 59° 54° N/A 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 12:59 of sunlight, then sets at 7:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:51 PM with -14:-38 of moolight, then sets at 2:13 AM

Top Story

Crystal Lake Weather Report

Severe Storms to Threaten Chicago on Labor Day

September 1, 2014; 9:40 AM ET

Chicago will become the target of severe thunderstorms as the Labor Day holiday weekend comes to an end, creating dangers for those with outdoor plans. more >

Fri. Dust & Dander

Fri. Wind Maps