Merry Christmas everyone! It will be a white Christmas here too, very similar to what timerover51 and Vuldacon were describing. It was -8F (-22C) when I woke up this morning and has warmed to -2F (-19C) now, with snow and ice all over. I consider today's main accomplishment to be talking a friend into postponing his planned trip back home in favor of giving the road crews time to work on the highways. Be careful with holiday travel!
I can only recall one time in my years in Ohio when it was most certainly colder than this, which was, IIRC, in 1995 when it hit -22F (-30C). Going below -5F is rare, at least near the middle of the state.
(And Vuldacon, for some reason I'd always thought you were out towards the southwest somewhere. Either I was mistaken or this cold spell is more widespread than I'd realized!)