Hot and dry!
It's a uniquely interesting area. We've been to Pheonix before a few years ago. We went north up through Wickenburg, Sedona and up to Monument Valley and then down through Winslow, Arizona (as in The Eagles song, and yes there was a girl in a flat bed ford!). In that trip you go from desert, up in altitude into a lush green plateau, and then on to the Monument Valley scenery. It has a lot of various aspects.
When we returned to Pheonix after Winslow, we then did a day trip to Tucson to see the Pima Aerospace museum, epic doesn't come close: 3 x B52's outside along with about 30 other aircraft, six hangars of planes and helicopters including an SR71 Blackbird! From there we took a trip round "The Boneyard" which is where the USAF stores a few thousand aircraft, all mothballed and useable in 72hrs.
So this time we stayed down in Tucson for a few days to visit the Titan Missile museum. A unique experience to be that close to a 56Megatonne yield ICBM (de-commisioned of course!).
Also visited Tombstone. Yes, that Tombstone, sight of the OK Corral gunfight between the Earp's and the Clantons.
So yes, if you can take the heat, great place to visit.
:thumbs