• Fri

    Feb 12

    21°Lo 10°

    Clearing and very cold

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

    Feb 13

    25°Lo 16°

    Partly sunny and cold

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

    Feb 14

    30°Lo 19°

    Snow or flurries possible

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

    Feb 15

    33°Lo 18°

    Cloudy

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

    Feb 16

    34°Lo 27°

    Cloudy with flurries

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 25° RealFeel® 24° Precipitation 3%

Day

N

E

S

W

  • S 6 mph
  • Gusts: 9 mph

Partly sunny and 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 16° RealFeel® 6° Precipitation 6%

Night

N

E

S

W

  • SE 8 mph
  • Gusts: 14 mph

Mainly clear and cold

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

Temperature History - Feb 13

more Historical Weather Data >
  Today Normal Record 2/13/2015
High 25° 31° N/A 25°
Low 16° 13° N/A -8°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:53 AM with 10:30 of sunlight, then sets at 5:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:54 AM with 13:44 of moolight, then sets at 11:38 PM

Crystal Lake Weather Report

Chicago: Temperatures to fall through the week

February 7, 2016; 7:08 AM 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