• Today

    Dec 28

    32°Lo 20°

    Partly sunny

    Good for home energy
    • Avg
      RealFeel
      21°
    • Hi
      RealFeel
      28°
    • Wind
      Speed
      7 mph
    more
  • Mon

    Dec 29

    29°Lo 11°

    Rather cloudy

    Good for home energy
    • Avg
      RealFeel
      10°
    • Hi
      RealFeel
      23°
    • Wind
      Speed
      8 mph
    more
  • Tue

    Dec 30

    18°Lo 4°

    Partly sunny and frigid

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

    Dec 31

    15°Lo 11°

    Sunny and frigid

    Excellent for home energy
    • Avg
      RealFeel
      -8°
    • Hi
      RealFeel
      -4°
    • Wind
      Speed
      17 mph
  • Thu

    Jan 1

    27°Lo 17°

    Mostly sunny and not as cold

    Excellent for home energy
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      13°
    • Wind
      Speed
      15 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
9am
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 10° 12° 14° 15° 15° 14° 14°
RealFeel® -11° -9° -7° -5° -4° -4° -7° -8°
Humidity 54% 52% 48% 45% 43% 43% 44% 45%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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Snow
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 15 W 16 W 17 W 18 W 18 W 18 WSW 18 WSW 17 WSW
UV Index 0 1 1 2 1 1 0 0
Cloud Cover 0% 0% 0% 0% 0% 0% 0% 0%
Dew Point -5° -5° -5° -4° -4° -4° -4° -4°
Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F Middle Grid line 5 F

Temperature History - Dec 31

more Historical Weather Data >
  Today Normal Record 12/31/2013
High 15° 28° N/A
Low 11° 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 28, 2014; 3:22 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