• Tonight

    Aug 1

    Lo 67°

    Some clouds, a t-storm late

    Running Weather
    • Precip
      7%
    • Hours of Precip
      1
    • Wind
      Gust
      21 mph
    more
  • Sun

    Aug 2

    86°Lo 64°

    A strong thunderstorm

    Fair for running
    • Precip
      56%
    • Hours of Precip
      3
    • Wind
      Gust
      27 mph
  • Mon

    Aug 3

    79°Lo 56°

    Breezy with periods of sun

    Very Good for running
    • Precip
      14%
    • Hours of Precip
      0
    • Wind
      Gust
      24 mph
    more
  • Tue

    Aug 4

    80°Lo 58°

    Pleasant with clouds and sun

    Excellent for running
    • Precip
      11%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
  • Wed

    Aug 5

    79°Lo 61°

    Partly sunny and delightful

    Excellent for running
    • Precip
      11%
    • Hours of Precip
      0
    • Wind
      Gust
      13 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
T-storms
Mostly Cloudy
Temp (°F) 70° 69° 69° 69° 69° 67° 69° 69°
RealFeel® 68° 67° 66° 66° 66° 65° 63° 68°
Humidity 77% 80% 78% 78% 79% 83% 87% 86%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
7%
 
11%
 
21%
 
21%
 
26%
 
47%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 8 WSW 9 SW 9 SW 9 SW 9 SW 10 SW 10 SW 10 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 26% 26% 76% 76% 76% 76% 76% 88%
Dew Point 63° 63° 62° 61° 62° 62° 65° 65°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 2

more Historical Weather Data >
  Today Normal Record 8/2/2014
High 86° 80° N/A 80°
Low 64° 60° N/A 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:47 AM with 14:25 of sunlight, then sets at 8:12 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:34 PM with 12:05 of moolight, then sets at 9:39 AM

Crystal Lake Weather Report

Chicago: Cooler Weather to Move in Midweek

August 1, 2015; 12:26 PM ET

After a warm start to the week, a trend toward cooler temperatures can be expected. 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.