• Tonight

    Dec 20

    Lo 29°

    Mostly cloudy

    Snow Days Weather
    • Snow
      6%
    • Ice
      0%
    • Snow
      0 in
  • Sun

    Dec 21

    42°Lo 31°

    Mostly cloudy with a flurry

    Very Unlikely for a snow day
    • Snow
      45%
    • Ice
      0%
    • Snow
      0.03 in
    more
  • Mon

    Dec 22

    45°Lo 40°

    Cloudy with spotty showers

    Very Unlikely for a snow day
    • Snow
      16%
    • Ice
      1%
    • Snow
      0 in
    more
  • Tue

    Dec 23

    47°Lo 33°

    Cloudy

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

    Dec 24

    37°Lo 26°

    Colder with snow at times

    Very Unlikely for a snow day
    • Snow
      77%
    • Ice
      1%
    • Snow
      0.25 in
    more
Next Previous
Hi 36° RealFeel® 34° Precipitation 8%

Day

N

E

S

W

  • S 5 mph
  • Gusts: 10 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 29° RealFeel® 23° Precipitation 1%

Night

N

E

S

W

  • S 6 mph
  • Gusts: 9 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 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 36° 34° 61° (1949) 34°
Low 29° 18° -17° (1983) 27°

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 5:32 AM with 10:09 of moolight, then sets at 3:41 PM

Ottawa Weather Report

Chicago: Chance for a White Christmas as Pattern Turns Unsettled

December 20, 2014; 4:16 AM ET

There's a chance for a white Christmas around Chicagoland as next week turns unsettled. 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