I live in southern Pa. We got out first snowfall. I keep a small 1 gallon "auto" waterer inside the coop that froze. The poop on the poop boards that is a foot off the floor froze too. They really dont use the inside waterer much. I have a 5 gallon waterer with a deicer and feeder outside. Is it too cold for them inside the coop if the water froze? Now I need to worry about frozen eggs if I forget one when the temps drops. I have about 5 inches of shavings that they packed down in the coop. A few inches in the nesting boxes. The nesting boxes stick "outside" the coop. I was a little anal and put plastic around the run. Glad I did. Very little snow got it. It got a little damp but all is good. The waterer in the picture is the one inside.