I think I've had seven Winters now and the only really tough one was last Winter, just after New Year, when everything seemed to freeze up for about an eight day period. Of course, the Jocks have it far tougher, the poor things, but those of us who live in a civilised part of the World need not worry too much!
Winter isn't usually a problem, a few minor irritations maybe, and I'd make sure your RO/DI is protected though.