There is a weak low pressure moving through the area during the day on Friday. This will bring some rain to the area; however, the GFS forecasts the system to have cleared the area by the football game on Saturday. The image below shows the ridge that will set up over the area for the weekend; which should bring pleasant conditions.
Later in my forecast period the GFS is forecasting a very strong trough to move into Indiana Tuesday night and bring storms and rain. Behind the low we could see some of the coldest temperatures of the season as fall will be in full swing. The image below shows the jet stream diving south associated with the deep trough. This is what will bring us the colder temperatures.