• Today

    Sep 16

    65°Lo 42°

    Mostly sunny

    Unlikely for hair frizz
    • Wind
      Gust
      9 mph
    • Precip
      4%
    • Hours of Precip
      0
    more
  • Wed

    Sep 17

    68°Lo 45°

    Mostly sunny and pleasant

    Watch for hair frizz
    • Wind
      Gust
      4 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Thu

    Sep 18

    69°Lo 50°

    Sunshine and pleasant

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

    Sep 19

    73°Lo 59°

    Times of clouds and sun

    Advisory for hair frizz
    • Wind
      Gust
      17 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    78°Lo 62°

    A couple of p.m. t-storms

    Advisory for hair frizz
    • Wind
      Gust
      23 mph
    • Precip
      60%
    • Hours of Precip
      7
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
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10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 53° 58° 62° 64° 67° 67° 69° 68°
RealFeel® 53° 60° 65° 69° 70° 70° 70° 68°
Humidity 82% 73% 66% 61% 57% 55% 54% 55%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 5 NE 6 ENE 6 ENE 6 ENE 7 ENE 6 ENE 6 ENE 6 ENE
UV Index 1 2 4 5 5 5 4 2
Cloud Cover 25% 25% 25% 25% 25% 25% 25% 25%
Dew Point 48° 50° 51° 50° 51° 51° 51° 51°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 69° 72° N/A 78°
Low 50° 48° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 12:22 of sunlight, then sets at 6:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 AM with 14:28 of moolight, then sets at 3:52 PM

Top Story

Crystal Lake Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 16, 2014; 9:12 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