When can Arizona expect a cool down in weather and will we get a mild or ruff winter?

October it will start to get cooler. Incidentally, October is the best and busiest month to see, hike and camp at the Grand Canyon!When can Arizona expect a cool down in weather and will we get a mild or ruff winter?
i would say probably in two or three months ...if not then than im a have to move else where cuz this heat is killing meWhen can Arizona expect a cool down in weather and will we get a mild or ruff winter?
Hot to Cold has a medium between hot and cold in autumn.