• Tonight

    Aug 27

    Lo 59°

    Patchy clouds

    Running Weather
    • Precip
      3%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
    more
  • Fri

    Aug 28

    74°Lo 64°

    Some sun, then clouds

    Excellent for running
    • Precip
      25%
    • Hours of Precip
      2
    • Wind
      Gust
      13 mph
    more
  • Sat

    Aug 29

    77°Lo 63°

    Mostly cloudy, showers; humid

    Fair for running
    • Precip
      88%
    • Hours of Precip
      4.5
    • Wind
      Gust
      14 mph
  • Sun

    Aug 30

    77°Lo 61°

    Variable cloudiness

    Very Good for running
    • Precip
      7%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
  • Mon

    Aug 31

    84°Lo 64°

    Mostly sunny and humid

    Very Good for running
    • Precip
      12%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
    more
Next Previous
Hi 77° RealFeel® 81° Precipitation 88%

Day

N

E

S

W

  • S 9 mph
  • Gusts: 14 mph

Mostly cloudy and humid with showers

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 29%
  • Precipitation: 0.44 in
  • Rain: 0.44 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4.5 hrs
  • Hours of Rain: 4.5 hrs
Lo 63° RealFeel® 62° Precipitation 22%

Night

N

E

S

W

  • NE 6 mph
  • Gusts: 8 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 29%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Aug 29

more Historical Weather Data >
  Today Normal Record 8/29/2014
High 77° 78° N/A 84°
Low 63° 61° N/A 70°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:14 AM with 13:18 of sunlight, then sets at 7:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:26 PM with 11:49 of moolight, then sets at 7:15 AM

Grayslake Weather Report

Chicago: Stray Shower May Interrupt Otherwise Ideal Weekend Conditions

August 27, 2015; 4:38 PM ET

Chicago is in store for near-ideal weekend conditions after a brief shower hits the area 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.