Generally chickens are outdoor creatures Chrisnut. They will only return to the coop to lay in daylight hours. So they need an outdoor shelter which is created either by the coop being raised off the floor so they can shelter under it (makes a good soil bath area) or they need shelter in the run. We have some mobile shelters for the exterior areas but all the runs are covered anyway. I know how they feel, as I would rather get wet outside than sit indoors.