Well, I just went out to my car and when I tried putting the key in it wouldn't go in. Dang tumblers were so cold they were practically frozen in place. Luckily I persuaded the key to go in the ignition, but when I tried starting the engine all it did was click once.
Dang Everstart Maxx (rated @ 1000 CA -875 CCA) is frozen solid -well pretty much. Luckily the sides are only bulged ever so slightly. My brother says they aren't bulging, but for safety I pulled the battery and brought it in the house and set it on top of a radiator.
BTW, at 10:30 the temp is only up to -15*F. At least the wind died down last night and we didn't get all the wind they were talking about. Still have a -30*F windchill though.