Kinda interesting, everyone will complain about their weather. The big thing is what is normal and abnormal for your area. Hot weather in the north is just not what normally happens. Where I live, these are normal temp and humidity readings, heck you get those readings sometimes at night. Here, humidity is always high, so you just get used to it.
Of course, we don't have the snow of the north at all. But anytime we do, we complain, lol. Abnormal weather anywhere will cause complaints, lol.
As someone who goes through that type of weather and worse every year, all summer, I can tell you there are few tips to help the situation.
I do have a tip though, one that I use myself. Since I also have a garage, I do most of my hardcore detailing at night during the summer. I leave the garage either cracked or open for a while with no lights on(as to not attract many bugs), so it cools down the garage before I start. Also allow time for your vehicles to cool from driving, if you have a vehicle in the garage that is freshly driven, it will give off alot of heat that can kill you while you work on another vehicle in the garage. Then close the garage, and go to work.
So if it is hot, try detailing at night, it works.