TIA: If you are coming to Arizona in August, you picked the right place to go to. I live in Phoenix which is about 140 miles south of Flagstaff. The big difference is elevation though. Phoenix is around 2400 ft. above sea level. Flagstaff is around 6500.

The coldest night of my life was in Flagstaff in the month of June 20 years ago.

We were crossing the desert and we had 110-120 degrees f in the daytime. Avout 8PM we pulled into Flafstaffm and it was about 40 degrees f, that was a drop of 70 degrees in temoerature, and none of us had any spring or winter clothing, and It was a very difficult cold night.