I hope this helps a tad. When I was young and skinny - I raised a flock of chickens. Where I was, we had mansoon seasons which lasted 3-6 months of almost daily rain. The trick back then was NOT to clean the coop, because the feces actualy insulate the cage.

In most Colorado winter, chicken should survive fine in an open coop (just like pigeon if you collect those). In extreme cold or thick snow, add a couple heat lamps. Same trick, dont clean the poop during the cold months.