HIGH: 74
LOW: 58
* A mix of sun and clouds.
* Seasonably warm with highs from the upper 60s and lower 70s near the lake to the mid- and upper 70s well inland.
* East-northeast winds winds at 10-15 m.p.h.
* Isolated afternoon and early evening thunderstorms could develop, especially west and south of the city.
* Fair overnight. Lows from the mid-50s inland to the lower 60s downtown.
SEPT. 21 TEMPERATURES
Normal high/low: 72(degrees)/52(degrees)
Record high: 92(degrees) (1970)
Record low: 39(degrees) (1991)
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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 11:30 a.m., 5:30 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
