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Declination: The latitude that the sun is directly above at a given time. It is about 23 (degrees) N at the summer solstice (June 21, the beginning of astronomical summer) and 23 (degrees) S at the winter solstice.
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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.
