Good vis and no clouds hopefully
Not necessarily. Storm systems sweep down from the NW at intervals and can persist for days. Yes, it rains in Arizona! It's a good plan to have a spare week in your itinerary to allow for this. Between the storms the weather can be glorious - no thermal turbulence, no cloud and little wind.
However, weather forcasting is on a different level to the tripe that we have to put up with and storms (and weather windows) are usually predicted days in advance. The all present Weather Channel gives you the picture wherever you are and the wonderful FSS briefers explain it to you in plain English. When they say "VFR not recommended" they mean it! So at least you can plan ahead.