• Tonight

    Sep 30

    Lo 46°

    Mostly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      53°
    • Wind
      Speed
      10 mph
  • Wed

    Oct 1

    68°Lo 56°

    Partly sunny and nice

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      6 mph
    more
  • Thu

    Oct 2

    74°Lo 56°

    A couple of thunderstorms

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      70°
    • Wind
      Speed
      12 mph
    more
  • Fri

    Oct 3

    60°Lo 40°

    Cooler with a few showers

    Poor for home energy
    • Avg
      RealFeel
      42°
    • Hi
      RealFeel
      56°
    • Wind
      Speed
      13 mph
    more
  • Sat

    Oct 4

    53°Lo 38°

    Windy with a shower possible

    Fair for home energy
    • Avg
      RealFeel
      39°
    • Hi
      RealFeel
      44°
    • Wind
      Speed
      15 mph
    more
Next Previous
Hi 57° RealFeel® 53° Precipitation 4%

Day

N

E

S

W

  • NE 10 mph
  • Gusts: 18 mph

Mostly cloudy and cooler

  • Max UV Index: 2 (Low)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 46° RealFeel® 45° Precipitation 5%

Night

N

E

S

W

  • ESE 3 mph
  • Gusts: 6 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • 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 30

more Historical Weather Data >
  Today Normal Record 9/30/2013
High 57° 67° N/A 69°
Low 46° 48° N/A 41°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:48 AM with 11:48 of sunlight, then sets at 6:36 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:01 PM with 9:59 of moolight, then sets at 11:00 PM

Top Story

Grayslake Weather Report

Chicago: Mix of Sun, Storms Ahead as Temperatures Fluctuate

September 30, 2014; 11:50 AM ET

The Chicago area is set for a roller-coaster weather pattern over the next few days as temperatures rise and fall in between alternating sunny and stormy skies. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Tue. Home Energy Efficiency

Tue. Degree Days

Tue. UV Index