The steady diet of winds off the still chilly lake is in its final day. By Saturday, winds increase from the south, strong enough to overcome any lingering lake effect. Along with temperatures in the 80s both Saturday and Sunday, the gush of warm air brings summer-like humidity, with dew points bumping up toward a sticky 70(degrees) both days.
Thunderstorms enter the picture late Saturday, Sunday, and into Monday with a cold front that takes nearly 48 hours to inch through the region. The best chance for rain will be Sunday afternoon, but models have been over-generous with forecast amounts for several weeks now, and these storms have weakened rapidly as they attempted to surge east from Nebraska in recent days. Thereafter, weak cold fronts push through the area at regular intervals with little temperature contrast and dynamics too weak for substantive rainfall.
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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.
