Thankfully, jno isn't on the speed dial list for the Tucson and Phoenix, Arizona Chambers of Commerce, else he'd be visited at midnight... While evenings can be brisk, southern Arizona is very pleasant throughout the winter months with the added enjoyment of taking a day's drive up to Flagstaff where it can snow 2 feet overnight!
Lot's to do, as well, nearby, what with the old Yuma Territorial Prison, the Saguaro Desert and specatacular nights looking at stars like you've never seen them, except from a desert... Some of the best Sonoran Mexican cooking available... Look up the address for 'Tequila Mockingbird', if you want a recommendation!