• Today

    Nov 20

    23°Lo 4°

    Mostly sunny and very cold

    At Risk weather for sinus headaches
    • Hi
      RealFeel
    • UV
      2 - Low
    • Cloud
      Cover
      18%
    more
  • Fri

    Nov 21

    29°Lo 25°

    Partly sunny and very cold

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      20°
    • UV
      2 - Low
    • Cloud
      Cover
      27%
  • Sat

    Nov 22

    46°Lo 41°

    Milder with rain and drizzle

    At High Risk weather for sinus headaches
    • Hi
      RealFeel
      37°
    • UV
      1 - Low
    • Cloud
      Cover
      93%
    more
  • Sun

    Nov 23

    48°Lo 35°

    Rain becoming steadier

    At Extreme Risk weather for sinus headaches
    • Hi
      RealFeel
      37°
    • UV
      1 - Low
    • Cloud
      Cover
      98%
    more
  • Mon

    Nov 24

    37°Lo 23°

    Snow showers; windy, colder

    At High Risk weather for sinus headaches
    • Hi
      RealFeel
      22°
    • UV
      1 - Low
    • Cloud
      Cover
      76%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
4am
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  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Clear
Clear
Clear
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 14° 19° 22°
RealFeel® 12° 15° 16°
Humidity 79% 81% 80% 80% 76% 68% 61% 55%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
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Snow
 
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Ice
 
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  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 4 WNW 2 SW 2 NW 4 SSW 5 S 6 S 7 S 8 S
UV Index 0 0 0 0 0 1 1 2
Cloud Cover 0% 0% 0% 1% 1% 0% 0% 0%
Dew Point -1°
Middle Grid line 25 F Middle Grid line 20 F Middle Grid line 15 F Middle Grid line 10 F Middle Grid line 5 F Middle Grid line 0 F

Temperature History - Nov 21

more Historical Weather Data >
  Today Normal Record 11/21/2013
High 29° 42° N/A 44°
Low 25° 25° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:51 AM with 9:36 of sunlight, then sets at 4:27 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:45 AM with 10:27 of moolight, then sets at 4:12 PM

Crystal Lake Weather Report

Chicago: Warming Trend to Follow Frigid Week

November 20, 2014; 8:08 AM ET

Warmer air is set to arrive for the weekend, but rain will accompany it. more >

New Year, New You

Dec 24, 2012; 5:00 AM ET Start 2013 right with these tips on how to set realistic New Year's resolutions!

Fri. Sinus Headache

Fri. UV Index