• Tonight

    Jul 12

    Lo 66°

    A strong evening thunderstorm

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Sun

    Jul 13

    82°Lo 56°

    A shower or t-storm in spots

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Jul 14

    73°Lo 51°

    Thundershower

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Tue

    Jul 15

    70°Lo 54°

    An afternoon shower in spots

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    Jul 16

    71°Lo 55°

    Periods of sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
Hi 79° RealFeel® 82° Precipitation 65%

Day

N

E

S

W

  • SSW 9 mph
  • Gusts: 26 mph

Cloudy with a couple of showers and a thunderstorm

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.16 in
  • Rain: 0.16 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2.5 hrs
  • Hours of Rain: 2.5 hrs
Lo 66° RealFeel® 63° Precipitation 55%

Night

N

E

S

W

  • W 5 mph
  • Gusts: 8 mph

A strong t-storm early, then a t-storm; storms can bring downpours, large hail and damaging winds

  • Max UV Index: N/A
  • Thunderstorms: 91%
  • Precipitation: 0.06 in
  • Rain: 0.06 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Jul 12

more Historical Weather Data >
  Today Normal Record 7/12/2013
High 79° 82° N/A 77°
Low 66° 63° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:26 AM with 15:03 of sunlight, then sets at 8:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:28 PM with 10:32 of moolight, then sets at 7:00 AM

Top Story

Grayslake Weather Report

Chicago Faces Strong Storms, to Turn Septemberlike

July 12, 2014; 8:59 AM ET

Strong thunderstorms will threaten Chicago this weekend before the city gets a taste of September. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Sat. Snow Day Potential