You can only stay 2 weeks at a time and reservations are suggested but the Maricopa County Parks of the greater Phoenix area are awesome - nice spacious sites and lush Sonoran desert. Lost Dutchman State Park is also a winner in that area.
Any of the state parks can handle big rigs and they are great but only 2 weeks at a time.
Quartzsite mid-January is a must-do just to see the massive RV congregation. Pick your spot off I-10 and Hwy 95 and enjoy for a short time.
Yuma is the warmest spot. Further north along the Colorado River up to Havasu has a couple nice state parks.
Don't go north of Phoenix during the winter - too cold.
Tucson is nice and Benson which is east of Tucson should be checked out. . warm days and cool nights but lots to do in the area. . . Tombstone, Bisbee, Kartchner Cavererns (which has a nice campground). A day trip to Chiricahua Nat'l Monument is worthwhile. The hiking is great.
You have a great idea to check out different areas. What's great for one person isn't necessarily so for another. We love Arizona!
