• Friday

    Feb 19

    42°Lo 22°

    Clouds giving way to some sun

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

    Feb 20

    51°Lo 28°

    Cloudy and warmer

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

    Feb 21

    47°Lo 31°

    Cloudy with rain possible

    Unlikely for a snow day
    • Snow
      19%
    • Ice
      0%
    • Snow
      0 in
    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.