• Tonight

    Apr 18

    Lo 47°

    Cloudy and breezy

    Lawn Mowing Weather
    • Hours of Precip
      0
    • Precip
      16%
    • Hi
      RealFeel
      67°
    more
  • Sun

    Apr 19

    61°Lo 45°

    Rain, becoming heavy; cooler

    Fair for lawn mowing
    • Hours of Precip
      11
    • Precip
      80%
    • Hi
      RealFeel
      59°
  • Mon

    Apr 20

    56°Lo 35°

    Windy; a shower in the a.m.

    Fair for lawn mowing
    • Hours of Precip
      0.5
    • Precip
      56%
    • Hi
      RealFeel
      52°
    more
  • Tue

    Apr 21

    54°Lo 34°

    Variable clouds; windy, cool

    Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      45°
    more
  • Wed

    Apr 22

    53°Lo 31°

    Breezy with variable clouds

    Poor for lawn mowing
    • Hours of Precip
      0
    • Precip
      11%
    • Hi
      RealFeel
      49°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
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8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Rain
Rain
Rain
Rain
Temp (°F) 48° 50° 53° 56° 56° 57° 59° 59°
RealFeel® 39° 42° 46° 51° 50° 51° 54° 53°
Humidity 65% 60% 57% 53% 68% 75% 75% 72%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
10%
 
22%
 
22%
 
27%
 
61%
 
61%
 
61%
 
65%
Snow
 
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0%
 
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Ice
 
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  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 15 E 16 E 16 E 16 E 15 E 14 E 13 ENE 13 ENE
UV Index 0 0 1 2 3 3 2 2
Cloud Cover 95% 94% 94% 94% 93% 92% 92% 94%
Dew Point 37° 37° 38° 39° 46° 49° 52° 50°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Apr 19

more Historical Weather Data >
  Today Normal Record 4/19/2014
High 61° 58° N/A 62°
Low 45° 36° N/A 31°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:06 AM with 13:33 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:49 AM with 14:07 of moolight, then sets at 8:56 PM

Crystal Lake Weather Report

Chicago: Rain to Span Second Half of Weekend

April 18, 2015; 10:31 PM 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 >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Sun. Overnight Freeze

Sun. Degree Days

Sun. Evapotranspiration