If you do go to Arizona, may I recommend Sedona AZ.
We went a couple years ago and it was beautiful.
pictures of sedona vacation If you go to the grand canyon,
dont go when we did, in the middle of the summer.
the smog really takes away from the view.
I now realize the grand canyon should be taken in in early spring or late fall. If you make it through the whole mess of picture above, you will see some grand canyon shots, which show the smog. They said they think it comes from LA, but not sure.
Sedona is not too hot, in fact the pool was rather cool. now southern arizona is a different beast altogether