HIGH: 81
LOW: 64
* Mostly cloudy with a chance of some showers and thunderstorms in the morning.
* Becoming partly sunny in the afternoon.
* Warm but turning less humid as dew points fall through the 60s.
* Afternoon highs reach the lower 80s, but remain a bit lower near the lake as winds turn northeast.
* Fair overnight. Lows drop to the lower and middle 60s by early Tuesday morning.
JULY 21 TEMPERATURES
Normal high/low: 84(degrees)/64(degrees)
Record high: 103(degrees) (1901)
Record low: 51(degrees) (1970)
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Weather Report is prepared by the WGN-TV Weather Center, where Tom Skilling is chief meteorologist. His forecasts can be seen Monday through Friday on WGN News at noon, 5:55 p.m. and 9 p.m.
WGN-TV meteorologists Steve Kahn, Richard Koeneman and Paul Dailey plus weather producer Bill Snyder contribute to this page.
IN THE WEB EDITION: For updated weather news, forecasts by ZIP code and local radar images, go to chicagotribune.com/weather or wgntv.com
