• Early AM

    Dec 29

    Lo 21°

    Increasing clouds

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

    Dec 29

    30°Lo 11°

    Rather cloudy

    Good for home energy
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      23°
    • Wind
      Speed
      8 mph
  • Tue

    Dec 30

    18°Lo 3°

    Partly sunny and frigid

    Very Good for home energy
    • Avg
      RealFeel
      -3°
    • Hi
      RealFeel
    • Wind
      Speed
      12 mph
    more
  • Wed

    Dec 31

    17°Lo 14°

    Sunny and frigid

    Excellent for home energy
    • Avg
      RealFeel
      -5°
    • Hi
      RealFeel
      -2°
    • Wind
      Speed
      16 mph
    more
  • Thu

    Jan 1

    27°Lo 18°

    Mostly sunny and not as cold

    Very Good for home energy
    • Avg
      RealFeel
      13°
    • Hi
      RealFeel
      15°
    • Wind
      Speed
      14 mph
    more
Next Previous
Mostly cloudy 24° RealFeel® 22°

N

E

S

W

  • Humidity: 86%
  • Pressure: 30.29 in
  • UV Index: 0
  • Cloud Cover: 75%
  • Ceiling: 19059 ft
  • Dew Point: 20° F
  • Visibility: 10 mi
5 mph

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 9:07 of sunlight, then sets at 4:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:10 PM with 13:30 of moolight, then sets at 1:40 AM

Temperature Summary - 4:42 AM

  Temp (°F)
Now 24°
Yesterday 24°
RealFeel® 22°
RealFeel® Shade 22°
Wind Chill 18°
Dew Point 20°
  Hi / Lo
Previous 6 Hours 25°
  23°
Previous 12 Hours 30°
  23°
Previous 24 Hours 32°
  22°

Temperature History - Dec 29

more Historical Weather Data >
  Today Normal Record 12/29/2013
High 30° 28° N/A 36°
Low 11° 12° N/A -1°

Precipitation Summary - 4:42 AM

  Amount (in)
Previous 1 Hour 0
Previous 3 Hours 0
Previous 6 Hours 0
Previous 9 Hours 0
Previous 12 Hours 0
Previous 18 Hours 0
Previous 24 Hours 0

Crystal Lake Weather Report

Chicago: Temperatures to Tumble as Year Comes to an End

December 29, 2014; 4:37 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.

Mon. Home Energy Efficiency

Mon. Degree Days

Mon. UV Index