I'll tell ya how cold it is....
I just went over to fire my elderly neighbor's outdoor wood stove. I like to never got the door open, and when I did, there was the suprise of my life. There inside the stove, hard as a stone wall, was the neighbor's fire. Frozen SOLID! I had to hammer and chizel it free, put it in an old washtub and bring it over to my house, to thaw it out. It's burning again now....Guess I'll run it back over there and throw another couple logs on it.