• Early AM

    Feb 12

    Lo 15°

    Very cold

    Sinus Headache Weather
    • Hi
      RealFeel
      19°
    • UV
      4 - Moderate
    • Cloud
      Cover
      77%
    more
  • Today

    Feb 12

    19°Lo -3°

    Becoming windier and frigid

    Neutral weather for sinus headaches
    • Hi
      RealFeel
    • UV
      2 - Low
    • Cloud
      Cover
      3%
    more
  • Sat

    Feb 13

    12°Lo 0°

    Mostly sunny and frigid

    At Risk weather for sinus headaches
    • Hi
      RealFeel
    • UV
      4 - Moderate
    • Cloud
      Cover
      97%
    more
  • Sun

    Feb 14

    21°Lo 19°

    Very cold with a little snow

    At High Risk weather for sinus headaches
    • Hi
      RealFeel
    • UV
      2 - Low
    • Cloud
      Cover
      97%
  • Mon

    Feb 15

    31°Lo 22°

    Not as cold with low clouds

    At Extreme Risk weather for sinus headaches
    • Hi
      RealFeel
      22°
    • UV
      2 - Low
    • Cloud
      Cover
      80%
    more
Next Previous
Occasional snow and flurries 21° Lo 19° RealFeel® 7° / 2°

N

E

S

W

  • Precipitation: 63%
  • Rain: 0 in
  • Snow: 0.4 in
  • Humidity: 61%
  • Cloud Cover: 98%
  • Dew Point: 9° F
  • Visibility: 5 mi
12 mph

Temperature History - Feb 14

more Historical Weather Data >
  Today Normal Record 2/14/2015
High 21° 31° N/A 25°
Low 19° 13° N/A -4°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:51 AM with 10:33 of sunlight, then sets at 5:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:33 AM with 14:12 of moolight, then sets at 12:45 AM

Crystal Lake Weather Report

Chicago: Dangerous cold to hold through weekend

February 12, 2016; 4:24 AM ET

Conditions will continue to be dangerously cold into the weekend in the Chicago area. more >

Sun. Sinus Headache

Sun. UV Index