I saw -35F while driving to work yesterday. "Warmed up" to -28F by the time I got there at least. This morning, it was -33F and "warmed up" to -25F by the time I got to work. Joy....
I hadn't seen the "set thermostat to 55" bit - I did see the 63 last night, but we generally set ours to 60 overnight anyway (that's what blankets are for).
I would've just stayed home if I wasn't required for a security audit all week. Bad timing...