I feel that life, down in Tucson and the temps are about the same. My JLUR mostly keeps up until about 110, then it starts getting rough even with the max A/C mode. I have the SOT and the best I've found is running with it open (I have the spiderwebshade as well) and then running the A/C to my feet. Doesn't let the heat build up and is fairly decent for 115 outside.I live in Vegas and it's been 110-115 here the past couple weeks. It's brutal the the JL A/C definitely has trouble keeping up. My old Toyota FJ was about as good a desert vehicle as I think you could ever find. The short, vertical windows keep a lot of the sun out and they were a lot like a Jeep's windows as far as that goes. I bet a headliner would make a noticeable difference so I'll probably try that out before too long.