HIGH: 71
LOW: 60
* A partly sunny start to the day with early-morning lows in the mid- to upper 50s.
* Clouds increase and thicken during the morning as temperatures rise through the 60s.
* By early afternoon skies become overcast with an east wind about 10 m.p.h. –marking a record 22nd day of easterly winds for this time of year.
* Highs level off in the lower 70s in the afternoon.
* Light showers could develop later in the afternoon and continue off and on overnight.
SEPT. 20 TEMPERATURES
Normal high/low: 72(degrees)/52(degrees)
Record high: 91(degrees) (1939)
Record low: 36(degrees) (1890)
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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.
Weather updates: Search for forecasts by ZIP code and radar images at chicagotribune.com/weather or wgntv.com
