• Today

    Sep 19

    73°Lo 58°

    Mostly sunny and breezy

    Excellent for running
    • Precip
      5%
    • Hours of Precip
      0
    • Wind
      Gust
      27 mph
  • Sat

    Sep 20

    79°Lo 57°

    Strong t-storms, mainly later

    Good for running
    • Precip
      66%
    • Hours of Precip
      3
    • Wind
      Gust
      24 mph
    more
  • Sun

    Sep 21

    70°Lo 48°

    Breezy with clouds breaking

    Very Good for running
    • Precip
      9%
    • Hours of Precip
      0
    • Wind
      Gust
      23 mph
    more
  • Mon

    Sep 22

    69°Lo 48°

    Times of clouds and sun

    Excellent for running
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
  • Tue

    Sep 23

    73°Lo 50°

    Mostly sunny

    Excellent for running
    • Precip
      6%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
Next Previous
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  Fri
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Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 73° 73° 73° 72° 70° 66° 64° 63°
RealFeel® 72° 71° 69° 67° 65° 61° 60° 58°
Humidity 48% 46% 46% 48% 53% 59% 65% 69%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Rain
 
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0%
Snow
 
0%
 
0%
 
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Ice
 
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  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Wind (mph) 14 S 15 S 16 S 13 S 11 S 9 SSE 9 S 10 S
UV Index 5 4 2 1 0 0 0 0
Cloud Cover 18% 19% 21% 23% 25% 25% 26% 26%
Dew Point 52° 51° 51° 51° 52° 52° 52° 53°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 73° 71° N/A 81°
Low 58° 47° N/A 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 12:19 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:18 AM with 14:09 of moolight, then sets at 4:27 PM

Top Story

Crystal Lake Weather Report

Chicago: Chance of Interrupting Thunderstorms for Weekend

September 19, 2014; 5:18 AM ET

Chicago is facing a mostly clear weekend with the threat of some disruptive thunderstorms on Saturday. more >

Avoid the Winter Workout Blues

Dec 26, 2012; 5:00 AM ET When it's snowing or cold, most of us want nothing more than to keep warm on the couch. But Violeta Yas has some tips to help you sneak in mini workouts at the office, regardless of the weather.