this is so true, but the thing the celsiouds won't understand, that the farenheitoids haven't realized, is that the celsius users die (not literally) in heat of about 85 f which for any fahrenheit user is, literally a nice summer day.
EDIT: i'm making a joke about the UK heat waves, since people don't seem to realize that.
Humidity plays a big part of that I think. Like, don't older folks start dropping in England around 85-90f because of the humidity there? In Phoenix 107 sucks hard, but it's dry so you can still effectively cool off.
the humidity certainly doesn't help, but believe it or not, it gets humid here in the US too. We get high humidity 85f days out here, if you're doing yard work, whatever clothing you're wearing is literally going to be soaked in sweat, it's not funny.
The bigger problem in some cases, is that european houses are designed differently to american houses, so the houses tended to be unbearably warm unless they had AC. Though a lot of people were still losing it with how hot 85f was outside.
Dry heat is "nicer" only in the sense that at the same temperature, you sweat less. That's it, 100f compared to 80f and humid, both are equally shit, one is just going to drench you in sweat and make you feel disgusting, while the other is going to exhaust you, drench you in sweat, and leave you feeling dry. With wet sticky clothing.
the US also has hot climates though? Have you looked the coverage of latitude that the US has? We have everything from directly on the equator, to about as near the north pole as you can get.