• Thu

    Sep 3

    86°Lo 63°

    Mostly sunny and very warm

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      12%
    • Hi
      RealFeel
      93°
    more
  • Fri

    Sep 4

    84°Lo 62°

    Plenty of sunshine

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      7%
    • Hi
      RealFeel
      90°
  • Sat

    Sep 5

    83°Lo 65°

    Plenty of sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      1%
    • Hi
      RealFeel
      82°
    more
  • Sun

    Sep 6

    80°Lo 61°

    Mostly sunny

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      81°
    more
  • Mon

    Sep 7

    76°Lo 64°

    A strong t-storm possible

    Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      30%
    • Hi
      RealFeel
      85°
    more
Next Previous
Hi 84° RealFeel® 90° Precipitation 7%

Day

N

E

S

W

  • ESE 6 mph
  • Gusts: 9 mph

Plenty of sunshine

  • Max UV Index: 6 (High)
  • Thunderstorms: 8%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 62° RealFeel® 64° Precipitation 7%

Night

N

E

S

W

  • E 2 mph
  • Gusts: 7 mph

Mainly clear

  • Max UV Index: N/A
  • Thunderstorms: 6%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 84° 77° N/A 83°
Low 62° 59° N/A 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:20 AM with 13:01 of sunlight, then sets at 7:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:27 PM with 14:42 of moolight, then sets at 2:09 PM

Grayslake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 29, 2015; 10:26 AM ET

A turn to warmer conditions is in store for the Chicago area heading into the new week. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?