Wondering how cold is to cold in hibernation. I try to keep things in the 50-52 range but got a little concerned when it dipped to 47 the other night. I use a digital thermometer that records the high and low temp for each day. I have a dedicated room for hibernation in my basement and everything is tucked away well but when the weather was a perfect 52 degrees I was doing a little winter cleaning with the window open...wife called me upstairs to help her and I'll be darn if I didn't forget to close the window. I'm just glad it wasn't a single digit temp night!!