• Today

    Dec 29

    30°Lo 11°

    Partly sunny

    Poor for biking
    • Precip
      7%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
  • Tue

    Dec 30

    18°Lo 3°

    Partly sunny and frigid

    Poor for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      17 mph
  • Wed

    Dec 31

    17°Lo 14°

    Sunny and frigid

    Poor for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      30 mph
    more
  • Thu

    Jan 1

    27°Lo 18°

    Mostly sunny and not as cold

    Poor for biking
    • Precip
      9%
    • Hours of Precip
      0
    • Wind
      Gust
      23 mph
    more
  • Fri

    Jan 2

    33°Lo 22°

    Variable cloudiness

    Poor for biking
    • Precip
      10%
    • Hours of Precip
      0
    • Wind
      Gust
      14 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 12° 13° 14° 16° 17° 18° 17° 16°
RealFeel® -1°
Humidity 58% 51% 46% 40% 37% 34% 34% 36%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
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0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 10 NW 10 NW 10 NW 10 NW 12 NW 13 NW 14 WNW 13 WNW
UV Index 0 1 1 2 1 1 0 0
Cloud Cover 26% 26% 26% 26% 26% 26% 26% 26%
Dew Point -1° -2° -3° -5° -6° -6° -7° -7°
Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F

Temperature History - Dec 30

more Historical Weather Data >
  Today Normal Record 12/30/2013
High 18° 28° N/A
Low 12° N/A -12°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:22 AM with 9:08 of sunlight, then sets at 4:30 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:46 PM with 13:59 of moolight, then sets at 2:45 AM

Crystal Lake Weather Report

Chicago: Temperatures to Tumble as Year Comes to an End

December 29, 2014; 6:37 AM ET

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

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.