• Friday

    Jan 2

    30°Lo 19°

    Sunshine

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

    Jan 3

    32°Lo 17°

    Abundant sunshine

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

    Jan 4

    24°Lo 15°

    Rather cloudy and cold

    Very Unlikely for a snow day
    • Snow
      15%
    • Ice
      0%
    • Snow
      0 in
    more
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Ottawa Weather Report

Chicago: Chance for a White Christmas as Pattern Turns Unsettled

December 21, 2014; 4:18 AM ET

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

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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.