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Chicago’s December temperature extremes: Based on official records since 1870, Chicago’s temperatures in December have ranged 96 degrees F from 71(degrees) (3rd, 1970, and 2nd, 1983) to -25(degrees) (24th, 1983).
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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.
