• Early AM

    Dec 29

    Lo 21°

    Increasing clouds

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      22°
    • Hi
      RealFeel
      28°
    • Wind
      Speed
      5 mph
    more
  • Today

    Dec 29

    30°Lo 11°

    Rather cloudy

    Good for home energy
    • Avg
      RealFeel
      12°
    • Hi
      RealFeel
      25°
    • Wind
      Speed
      8 mph
    more
  • Tue

    Dec 30

    18°Lo 4°

    Partly sunny and frigid

    Very Good for home energy
    • Avg
      RealFeel
      -4°
    • Hi
      RealFeel
    • Wind
      Speed
      10 mph
    more
  • Wed

    Dec 31

    16°Lo 12°

    Sunny and frigid

    Excellent for home energy
    • Avg
      RealFeel
      -7°
    • Hi
      RealFeel
      -3°
    • Wind
      Speed
      17 mph
  • Thu

    Jan 1

    27°Lo 16°

    Mostly sunny and not as cold

    Very Good for home energy
    • Avg
      RealFeel
      10°
    • Hi
      RealFeel
      13°
    • Wind
      Speed
      15 mph
    more
Next Previous
Clear 15° Lo 12° RealFeel® -5° / -10°

N

E

S

W

  • Precipitation: 0%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 58%
  • Cloud Cover: 0%
  • Dew Point: 1° F
  • Visibility: 10 mi
18 mph

Temperature History - Dec 31

more Historical Weather Data >
  Today Normal Record 12/31/2013
High 16° 28° N/A
Low 12° 12° N/A -7°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 9:09 of sunlight, then sets at 4:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 PM with 14:24 of moolight, then sets at 3:48 AM

Crystal Lake Weather Report

Chicago: Temperatures to Tumble as Year Comes to an End

December 29, 2014; 1:37 AM ET

Temperatures are set to tumble this week across Chicagoland, putting a harsh chill on the final days of 2014. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Wed. Home Energy Efficiency

Wed. Degree Days

Wed. UV Index