Getting your Trinity Audio player ready...
Probability of precipitation: The likelihood, expressed as a percentage, that precipitation will occur at any given spot within the forecast area during a given period of time.
———-
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.
