Very hot. Very dry. Generally sparsely populated outside the city limits.

If my trivia serves me properly, my understanding is that Phoenix get 300+ sunny days a year.

My suggestion: Kush. It's Afghanistan native, deals with hot weather nicely (obviously), and is pretty tough. Provided you water it regularly, you could get a pretty damned sweet crop.

Kush is perfect for the AZ climate.

But you should let other people give their two cents, too.