Regarding rain we leave it up to the girls to decide if they want to venture or not. I have two that can't wait to run into the mud puddles and one that stays in the coop until the last sprinkle stops and then comes out to forage. They're all different. I've seen videos and photos of chickens in the snow and some that only wanted to walk on the shoveled paths - they're all so different! You have done such a nice job and so FAST too!