-17 temp, -37 windchill here in central Wisconsin. Schools are closed.
I don't know how cold it is here in Mid and northern lower Michigan but the entire area is closed down- they started posting them last night. Yesterday it only made it to 2 degrees, and overnight water pipes were freezing up. They were warning people to stay indoors all of yesterday.
I don't know about other places, but we have had a lot of blowing and drifting snow and country and side roads are very dangerous, that added with the freezing temps ,caused school districts to close.