Hopefully it will be nice weather. I'm originally from Central Michigan and know that it can get cold up there MUCH earlier in the year than it ever does here in Texas. What are the normal temperatures in that area for the end of November?
Look at a weather website a few days before flying in. Winter conditions are possible. We are expecting some snow showers in central Illinois later this week. It is possible you could see overnight lows in the teens by the end of November.
It’s pretty mild up here right now, temps are around the mid 40s-50s, with a little rain. Most of the time it doesn’t get really cold or snowy until mid to late December. Bring a jacket and a hat for sure, but you probably don’t need real winter gear.