• Today

    Apr 19

    67°Lo 46°

    Cloudy; p.m. rain, colder

    At Risk weather for asthma
    • Hi
      RealFeel
      69°
    • UV
      5 - Moderate
    • Air Qual.
      Good
    more
  • Mon

    Apr 20

    56°Lo 36°

    Windy and cooler

    At Risk weather for asthma
    • Hi
      RealFeel
      51°
    • UV
      5 - Moderate
    • Air Qual.
      Good
  • Tue

    Apr 21

    55°Lo 33°

    Variable clouds; windy, cool

    Neutral weather for asthma
    • Hi
      RealFeel
      49°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Wed

    Apr 22

    51°Lo 32°

    Variably cloudy; windy, cool

    Beneficial weather for asthma
    • Hi
      RealFeel
      46°
    • UV
      6 - High
    • Cloud
      Cover
      70%
    more
  • Thu

    Apr 23

    51°Lo 30°

    Sunny and breezy

    Beneficial weather for asthma
    • Hi
      RealFeel
      49°
    • UV
      7 - High
    • Cloud
      Cover
      10%
    more
Next Previous
< Previous 8 hours Next 8 hours >
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Forecast
Rain
Cloudy
Cloudy
Rain
Cloudy
Rain
Rain
Partly Cloudy
Temp (°F) 50° 49° 49° 49° 47° 46° 47° 48°
RealFeel® 42° 44° 44° 41° 41° 37° 37° 40°
Humidity 87% 87% 87% 88% 90% 92% 91% 88%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
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Snow
 
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  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 9 W 9 W 9 WSW 9 WSW 10 W 10 WNW 12 NW 14 NW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 95% 95% 95% 95% 95% 95% 95% 72%
Dew Point 46° 46° 46° 45° 45° 44° 45° 44°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 56° 58° N/A 78°
Low 36° 36° N/A 33°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 13:35 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:33 AM with 14:30 of moolight, then sets at 10:03 PM

Crystal Lake Weather Report

Chicago: Rain to Span Second Half of Weekend

April 19, 2015; 5:55 AM ET

The second half of the weekend will see a combination of lower temperatures and significant rainfall, but Chicago will slowly pull out of the damp, cooler conditions through the new week. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Mon. Air Quality

Mon. Asthma Risk

Mon. UV Index