• Thu

    Feb 11

    20°Lo 8°

    Partly sunny and very cold

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

    Feb 12

    22°Lo 8°

    Clearing and cold

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

    Feb 13

    21°Lo 10°

    Partly sunny and very cold

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

    Feb 14

    25°Lo 17°

    Snow or flurries possible

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

    Feb 15

    27°Lo 20°

    Partly sunny and cold

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 20° RealFeel® 16° Precipitation 3%

Day

N

E

S

W

  • WNW 7 mph
  • Gusts: 12 mph

Partly sunny and very cold

  • Max UV Index: 3 (Moderate)
  • 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 8° RealFeel® -6° Precipitation 70%

Night

N

E

S

W

  • WNW 8 mph
  • Gusts: 12 mph

Cold with increasing cloudiness; a bit of snow late

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0.02 in
  • Rain: 0 in
  • Snow: 0.5 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 0 hrs

Temperature History - Feb 11

more Historical Weather Data >
  Today Normal Record 2/11/2015
High 20° 30° N/A 33°
Low 12° N/A 13°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:55 AM with 10:25 of sunlight, then sets at 5:20 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:41 AM with 12:36 of moolight, then sets at 9:17 PM

Crystal Lake Weather Report

Chicago: Temperatures to fall through the week

February 6, 2016; 2:33 PM ET

Colder air will follow winter weather early in the week across the Chicago region. more >

Health Weather

Jan 19, 2016; 10:05 AM ET How the weather impacts people's health