• Today

    Sep 18

    65°Lo 49°

    Areas of fog, then sun

    Advisory for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      2%
    • Hours of Precip
      0
  • Fri

    Sep 19

    73°Lo 60°

    Times of clouds and sun

    Watch for hair frizz
    • Wind
      Gust
      22 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    79°Lo 58°

    A couple of p.m. t-storms

    Advisory for hair frizz
    • Wind
      Gust
      21 mph
    • Precip
      74%
    • Hours of Precip
      5
    more
  • Sun

    Sep 21

    71°Lo 49°

    Clouds breaking; less humid

    Watch for hair frizz
    • Wind
      Gust
      17 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Mon

    Sep 22

    66°Lo 49°

    Times of sun and clouds

    Watch for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Partly Cloudy
Fog
Fog
Partly Cloudy
Temp (°F) 48° 49° 48° 49° 53° 55° 59° 62°
RealFeel® 46° 46° 44° 46° 50° 53° 59° 64°
Humidity 91% 86% 92% 91% 82% 83% 78% 74%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
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0%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 4 NNE 5 NNE 5 NNE 5 NNE 6 NNE 6 NNE 6 NNE 6 NNE
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 36% 47% 45% 42% 53% 55% 56% 58%
Dew Point 45° 45° 46° 46° 48° 50° 52° 53°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 65° 72° N/A 79°
Low 49° 53° N/A 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:35 AM with 12:22 of sunlight, then sets at 6:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:23 AM with 14:29 of moolight, then sets at 3:52 PM

Top Story

Grayslake Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 18, 2014; 6:12 AM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Thu. Hair Frizz

Thu. Wind Maps

Thu. UV Index