• Today

    Dec 18

    30°Lo 19°

    Mostly cloudy

    Very Unlikely for a snow day
    • Snow
      16%
    • Ice
      0%
    • Snow
      0 in
  • Fri

    Dec 19

    32°Lo 24°

    Mostly cloudy

    Very Unlikely for a snow day
    • Snow
      1%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sat

    Dec 20

    37°Lo 26°

    Clouds giving way to some sun

    Very Unlikely for a snow day
    • Snow
      8%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Dec 21

    40°Lo 31°

    Mostly cloudy

    Very Unlikely for a snow day
    • Snow
      8%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Dec 22

    42°Lo 35°

    Cloudy, afternoon rain

    Very Unlikely for a snow day
    • Snow
      14%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
Hi 30° RealFeel® 31° Precipitation 16%

Day

N

E

S

W

  • NW 4 mph
  • Gusts: 7 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 19° RealFeel® 20° Precipitation 6%

Night

N

E

S

W

  • WNW 4 mph
  • Gusts: 5 mph

Partly 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 18

more Historical Weather Data >
  Today Normal Record 12/18/2013
High 30° 33° 59° (1962) 40°
Low 19° 17° -5° (1963) 13°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:17 AM with 9:12 of sunlight, then sets at 4:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:29 AM with 10:42 of moolight, then sets at 2:11 PM

Peru Weather Report

Chicago: White Christmas in the Offing

December 18, 2014; 9:13 AM ET

While the next couple of days will be tranquil for the Chicago area, Christmas Eve could deliver enough snow to blanket the city. 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

Thu. Snow Day Potential