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Killing freeze: The occurrence of air temperatures below freezing (32+F) that kills annual vegetation without the formation of frost. Killing freezes occur most often when it is cloudy and windy (conditions that inhibit the formation of frost).
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Tom Skilling is chief meteorologist at WGN-TV. His forecasts can be seen Monday through Friday on WGN-TV News at noon and 9 p.m.
WGN-TV meteorologists Steve Kahn, Richard Koeneman and Paul Dailey plus weather producer Bill Snyder contribute to this page.
