• Today

    Aug 29

    73°Lo 62°

    Rain, then a shower

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Aug 30

    81°Lo 64°

    Warmer with some sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Aug 31

    86°Lo 67°

    Sunny, very warm and humid

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

    Sep 1

    87°Lo 68°

    Mostly sunny, warm and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Wed

    Sep 2

    86°Lo 66°

    Partly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 87° RealFeel® 92° Precipitation 25%

Day

N

E

S

W

  • SSW 9 mph
  • Gusts: 14 mph

Mostly sunny, very warm and humid

  • Max UV Index: 6 (High)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 68° RealFeel® 65° Precipitation 62%

Night

N

E

S

W

  • SSW 8 mph
  • Gusts: 10 mph

Partly cloudy and warm; an evening thunderstorm followed by a couple of showers late

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.14 in
  • Rain: 0.14 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 87° 78° N/A 80°
Low 68° 55° N/A 61°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:18 AM with 13:10 of sunlight, then sets at 7:28 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:21 PM with 13:35 of moolight, then sets at 10:56 AM

Crystal Lake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 29, 2015; 1:26 PM ET

A turn to warmer conditions is in store for the Chicago area heading into the new week. more >

Tue. Dust & Dander

Tue. Wind Maps