San Tan Valley just south of Queen Creek or about 45 minutes SE of Phoenix. It's hot here so early in the morning or after the sun goes down.
Best time for me is winter, early spring of late fall.
Have you gone down to Puerto Pensaco? We haven't been down there yet but a buddy just bought a house there and said I can ride down any time. We would probably lock the bike up in the garage and take taxis. Really don't want to lose my scoot in Mexico.