During this trip we made a wonderful 8 day swing from Joshua Tree NP (southern CA) to Zion NP and then down to southern AZ. This was the risky part of the trip, heading up to about 4000? in elevation and farther north. We had 5 days of great weather in Zion. Only a couple of nights did the CG inside the park fill, and there was only about 25 campsites open. Not a lot of people on the trails. We could see from weather reports that a stretch of cold cloudy weather was on the way, so we left, heading south. There was one more very pleasant day of travel with a boondocking night with great views of the Vermillion Cliffs near Lees Ferry and the Navajo bridge over the Colorado River. The next morning was cool and clear, very nice. However the drive south on US-89 to Flagstaff was pretty rough. We ran into 20-30mph head winds. I had trouble keeping my speed above 45mph because of the head wind. As we approached Flagstaff, the weather turned into a wintry mix, complete with the head wind, on the climb up to Flagstaff. A very tiring drive. Fortunately at Flagstaff the worst of the drive was over. From Flagstaff to Camp Verde the drive down I-17 was mostly downhill. We had a quiet night in the casino parking lot in Camp Verde and the next day headed farther south to Picacho Peak SP, a little north of Tuscon.