I think the southwestern US is fascinating, geographically. It’s so different than where almost everyone in the country lives, especially when you have to pass from one population hub to another. It will take one long day to cover the 703 miles this drive will take. Our pace will be at 68mph, which is perfect for driving through the desert.
Almost the entire country is sitting within an upper level trough. One part that isn’t is the west coast, where a sharp ridge is working to keep the Gulf of Alaska low at bay. Skies will be mostly sunny through southern California and western Arizona, but not completely clear. Valley fog will take a while to burn off initially, but should be out of the picture by the time we reach Bakersfield. With northerly jet flow particularly strong in the region, expect Arizona to be seasonably cool, if not a bit chillier, with cloudy skies possible, particularly west of Phoenix. Tucson is going to be a nice place to be this time of year, but may be a bit cooler than expected upon our arrival.