I picked up my kids a day early; they canceled school for them today and on Monday (the cold snap is supposed to continue for several days, and not many people are going to go out when it's that cold.)
I grew up in North Dakota, and we saw nearly -70 below with the wind chill once as kids. We had a quarter mile driveway (lived out in the country) and the bus would stop on the highway instead of coming into the drive to pick us up; my dad used to put round bales at the end of the drive as wind breaks for us as we waited (otherwise we had to do a 1/4 mile run to the bus in the freezing wind lol!)
I pumped oil wells for a time and used to have to go out in -60 below winds; we'd often shut down the pumping units because metal gets a lot more brittle when it's that cold (causing brittle fractures.) A lot of that job was just "listening" the sound everything made, because they'd make the same sound every day, and in the cold, cold winter, you could almost hear things snapping.