Living in Phoenix Arizona, helps to keep us riding all year. Our riding weather starts now for both classic cars and bikes. It's the summer heat of June-Sept that keeps us off the roads...
Although I would hate the heat of the summer there, I envy your weather the rest of the year. Esp. since during the summer here, it is usually very humid, and thunderstorms are always a threat. You can always head up to Flagstaff to escape the oppressive heat in the summer.