Sunday’s forecast shows decreasing clouds, warmer & muggier. Chance of afternoon thunderstorms. WSW 5-10 mph

High 85, record is 87.

Sunday night: A flash flood warning and severe thunderstorm watch is in place until 12:00 a.m. for Kankakee, Will, Grundy, Kendall and LaSalle counties in Illinois.

A severe thunderstorm warning is in place for Newton and Jasper counties in Indiana until 12:00 a.m.

According to the National Weather Service, torrential rainfall and flash flooding may occur, along with damaging winds capable of downing tree limbs, and damaging hail capable of denting cars and siding.

Monday: Mostly cloudy & cooler, especially lakeside. Chance of iso. showers/thunderstorms. NE 10-15 mph. High near 70, mid 60s lakeside. 

Chicago Weather | Tom Skilling and the WGN Weather Center’s Forecast (wgntv.com)

Extended outlook calls for mostly sunny skies that return for the middle of the week. NE winds off the chilly lake waters deliver temps in the seasonal upper 60 and maybe a few 70s inland. More clouds and warmer for Friday and Saturday with highs back in the mid to upper 70s with a chance of showers and t’storms both days.