I know..glad I'm not at that game, the 'stick is wicked cold (for real)...
All kidding aside, I just checked my lemon tree and though I've been covering it, there are signs of freeze damage. A week of this on top of a drought - not good. I'm struggling to keep my starter going (after recovering it) in this cold as well. Right now I've moved it under a heat vent in the bathroom because I got no activity after a refresh at the 12 hr mark (and below 55F in the house overnight).
Boo to spare the air days - they are always on the days you want to use the fireplace.
Waiting for the big game -- I fear Seattle is going to cream us, thank goodness at least this is a 49er home game.