It makes the best sense to do the southern states explorations in the cooler months. Utah in summer, for example, you'd probably be stuck inside by the A/C doing nothing from 10 or 11 am until 7 pm. If you plan those trips for times when it isn't beastly hot, your A/C issue won't be so much of an issue and you'll be comfortable. JMO. Living in Oklahoma, my summer trips are to the north (like Michigan) or to the mountains where it's cool enough to get outside; sitting indoors due to heat is something I can do at home.
