I was thinking of getting an electric heating pad for the stray cat outside and put under some kind of shelter I'll build. (It's too afraid of my cat to come into the house and warm up, but I can tell he wants to.) It'll be below freezing here soon, we've been lucky so far.

I don't want to find the poor guy frozen like I did another cat last year; I caught hell digging the hard dirt deep enough to bury it.

You are in my thoughts. Stay well.