• Today

    May 4

    51°Lo 39°

    Turning cloudy and cooler

    Beneficial weather for colds
    • Avg
      Temp
      45°
    • Avg
      RealFeel
      36°
    • Hi
      RealFeel
      46°
  • Thu

    May 5

    63°Lo 39°

    Turning sunny; warmer

    Beneficial weather for colds
    • Avg
      Temp
      51°
    • Avg
      RealFeel
      55°
    • Hi
      RealFeel
      69°
    more
  • Fri

    May 6

    77°Lo 58°

    Mostly sunny, nice and warm

    Beneficial weather for colds
    • Avg
      Temp
      68°
    • Avg
      RealFeel
      67°
    • Hi
      RealFeel
      80°
    more
  • Sat

    May 7

    64°Lo 38°

    A shower and t-storm around

    Neutral weather for colds
    • Avg
      Temp
      51°
    • Avg
      RealFeel
      45°
    • Hi
      RealFeel
      63°
    more
  • Sun

    May 8

    69°Lo 48°

    Partly sunny

    Beneficial weather for colds
    • Avg
      Temp
      59°
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      72°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
8am
9am 10am 11am
  8am 9am 10am 11am
Forecast
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Cloudy
Temp (°F) 46° 47° 49° 49°
RealFeel® 39° 40° 42° 42°
Humidity 74% 69% 63% 59%
   
  8am 9am 10am 11am
Rain
 
25%
 
20%
 
20%
 
20%
Snow
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am
Wind (mph) 14 NNW 16 N 17 NNW 17 N
UV Index 1 2 2 2
Cloud Cover 70% 82% 88% 95%
Dew Point 38° 37° 36° 36°
Middle Grid line 50 F Middle Grid line 45 F

Temperature History - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2015
High 51° 64° N/A 71°
Low 39° 41° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:44 AM with 14:13 of sunlight, then sets at 7:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:34 AM with 12:55 of moolight, then sets at 5:29 PM

Crystal Lake Weather Report

Chicago: Temperatures to soar late this week

May 4, 2016; 12:55 PM ET

Temperatures will soar into the 70s by late in the week in the Chicago area. more >

Flu Season is Just Around the Corner

Sep 11, 2012; 2:00 PM ET The peak of flu season may not be until January, but preparations should begin now. Adrienne Veilleux has more.

Wed. Cold & Flu

Wed. UV Index