• Early AM

    Dec 29

    Lo 21°

    Increasing clouds

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      23°
    • Hi
      RealFeel
      30°
    • Wind
      Speed
      5 mph
    more
  • Today

    Dec 29

    28°Lo 12°

    Mostly cloudy

    Good for home energy
    • Avg
      RealFeel
      13°
    • Hi
      RealFeel
      23°
    • Wind
      Speed
      7 mph
  • Tue

    Dec 30

    18°Lo 5°

    Partly sunny and colder

    Very Good for home energy
    • Avg
      RealFeel
      -2°
    • Hi
      RealFeel
      10°
    • Wind
      Speed
      9 mph
    more
  • Wed

    Dec 31

    17°Lo 13°

    Sunny, brisk and cold

    Excellent for home energy
    • Avg
      RealFeel
      -5°
    • Hi
      RealFeel
    • Wind
      Speed
      16 mph
    more
  • Thu

    Jan 1

    27°Lo 17°

    Mostly sunny and not as cold

    Very Good for home energy
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      14°
    • Wind
      Speed
      15 mph
    more
Next Previous
Hi 28° RealFeel® 23° Precipitation 11%

Day

N

E

S

W

  • N 7 mph
  • Gusts: 12 mph

Mostly cloudy

  • Max UV Index: 1 (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 12° RealFeel® 3° Precipitation 9%

Night

N

E

S

W

  • NNW 8 mph
  • Gusts: 13 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 - Dec 29

more Historical Weather Data >
  Today Normal Record 12/29/2013
High 28° 31° N/A 38°
Low 12° 17° N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:21 AM with 9:07 of sunlight, then sets at 4:28 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:09 PM with 13:30 of moolight, then sets at 1:39 AM

Grayslake Weather Report

Chicago: Temperatures to Tumble as Year Comes to an End

December 29, 2014; 1:07 AM ET

Temperatures are set to tumble this week across Chicagoland, putting a harsh chill on the final days of 2014. 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.

Mon. Home Energy Efficiency

Mon. Degree Days

Mon. UV Index