This is interesting. Midday temps in the USA and Canada:
Since the snark patrol will say “so what, it’s cold” my point is that I produce this map, and I don’t recall seeing this extent of the CONUS colored purple. Usually SoCal and South Texas at least have some warmth. The temperature difference between Miami and Atlanta is also striking.
Of course just a couple of days ago, there were high temperature records set ahead of the arctic outbreak: