Back edge of the first round of rainfall runs from Morocco to Crawfordsville. This continues to race northeastward.
Meanwhile, pre-frontal line of showers & storms is forming along I-57 with line of light showers with the actual cold front in west-central Illinois.
There is some sun appearing in a narrow zone just ahead of the line & also ahead of the cold front.
Given the strengthening wind fields & shear, an isolated small bow, LEWP or node in the line with isolated severe weather cannot be ruled out. However, all the rain & lack of good heating will preclude any higher risk or spatial coverage of severe risk than that.
Sharply colder weather will follow tonight with clearing & lows of 38-45. WInd chills will run 33-38 by early tomorrow morning.