They are calling this a "flash freeze." Scott, always the curmudgeon, thinks this is a made up term to generate more interest in the weather and to create sensationalism. Maybe. But I think it is actually very accurate. Yesterday morning it was about 30F and this morning it's minus somewhere between 1 and 8. And then there's a 22mph wind.
That qualifies, in my little mind, as butt cold regardless of what you call it.