National Weather Service United States Department of Commerce

While rainfall will not be continuous, there will be frequent chances of rain into early next week, and the highest chances will generally be north of I-70. As we get further into the new work week, the rain threat will decrease as hot weather spreads across the Midwest. In the meantime, high temperatures in the 80s will be common the next few days.
Looking ahead at Saturday's severe weather threat, in the words of the Storm Prediction Center, "a conditional and complex severe risk is forecast." We'll have some morning showers and storms moving through, and while those should remain below severe levels, they will leave a boundary to help trigger more storms in the afternoon. Where that boundary sets up is the big question, but the general thought at this time is that it will be close to I-72. The afternoon storms will be capable of producing mainly damaging winds over 60 mph. Additional storms are likely over Saturday night, though the severe threat is lower at that time.
A heat wave will spread across much of the Midwest beginning on Tuesday, and by Wednesday and Thursday, we'll be seeing heat index values topping out in the 105 to 115 degree range. Given how humid it will be, the nighttime won't provide a lot of relief.