Yes, Hill AFB is still active. The f16's have been replaced with f35's. I golf on a course that is just on the east side of Hill, man those planes are loud but very fun to watch. There's a gal that heads up the f35 demo team and what a gas to watch when she's out practicing!
I do know how hot you get in the summer. I've had flights delayed out of Phoenix because of heat making the air too thin for lift on the wings. I spend the winter in St George and sometimes I'll come down for golf in the summer because prices are low, can walk on any course and the courses are in great shape getting them ready for the winter (much the same as in Phoenix).
I have a good friend in Idaho Falls who's an old VW person. I pass through there every year on my way to Island Park for an annual fishing trip with some old work buddies.