It is -2 this morning. I"ve already been out 3 times. First time in the dark. So far I only had one egg that was even cold,, of course it was one that goes in MY incubator, but it wasn't as cold as one from fridge. I'm giong out every hr. But I have so many broodys, that they are jumping on any eggs laid and keeping them warm for me, Now isn't that nice of them.