• Today

    Feb 12

    21°Lo -2°

    Becoming windier, very cold

    Excellent for home energy
    • Avg
      RealFeel
      -10°
    • Hi
      RealFeel
    • Wind
      Speed
      17 mph
  • Sat

    Feb 13

    12°Lo 0°

    Mostly sunny and frigid

    Excellent for home energy
    • Avg
      RealFeel
    • Hi
      RealFeel
    • Wind
      Speed
      8 mph
    more
  • Sun

    Feb 14

    21°Lo 20°

    Very cold with a little snow

    Excellent for home energy
    • Avg
      RealFeel
    • Hi
      RealFeel
    • Wind
      Speed
      13 mph
    more
  • Mon

    Feb 15

    35°Lo 21°

    Not as cold with low clouds

    Good for home energy
    • Avg
      RealFeel
      22°
    • Hi
      RealFeel
      28°
    • Wind
      Speed
      10 mph
    more
  • Tue

    Feb 16

    33°Lo 14°

    A bit of afternoon snow

    Good for home energy
    • Avg
      RealFeel
      14°
    • Hi
      RealFeel
      26°
    • Wind
      Speed
      9 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Partly Sunny
Mostly Sunny
Temp (°F) 12° 17° 18° 19° 20° 21° 20° 18°
RealFeel® -2° -1°
Humidity 90% 76% 73% 74% 71% 65% 64% 63%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
2%
 
2%
 
2%
 
2%
 
2%
 
1%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
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  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 9 WNW 12 WNW 14 NW 15 NW 23 NW 23 NW 18 NW 20 NW
UV Index 0 0 1 1 1 1 2 2
Cloud Cover 94% 98% 94% 98% 96% 90% 45% 26%
Dew Point 10° 10° 11° 12° 12° 11°
Middle Grid line 25 F Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F

Temperature History - Feb 12

more Historical Weather Data >
  Today Normal Record 2/12/2015
High 21° 31° N/A 13°
Low -2° 13° N/A -4°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:54 AM with 10:28 of sunlight, then sets at 5:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:17 AM with 13:11 of moolight, then sets at 10:28 PM

Crystal Lake Weather Report

Chicago: Dangerous cold to hold through weekend

February 12, 2016; 8:24 AM ET

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

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index