Overall, we are cooler here as you've said, hence the disregard for bothering to have some sort of AC at all. But there are times, such as now, when we'll get slammed with high temps and we all get caught off-guard with it. I live in a 10-unit apartment building and I'm on the top floor. The roof is of that type where they roll out these very thin tar/crushed stone granule sheet rolls and flame them to adhesion. IE zero shielding from the sun. The roof, no thanks to lack of insulation, cooks under that sun all day and won't cool out 'till like 10PM where it just starts to get reasonably comfortable for me and my beloved radios. I could stand in my living room, reach my arm up and feel it's probably 10-15* hotter near the ceiling.
Anyways, you my friend, being so steeped in your years of focus and knowledge and sheer final-word wisdom of all things radio, can move freely with confidence regarding these things whereas I am here literally "sweating" the small stuff