I’m the exact opposite. Once it gets above 65 I start to sweat like some kind of pig man. I could never deal with 70+ for more than a few days in a row. Long sleeves usually get added around September when we start to get into the 40s.Anything below 80°F and I'm in Hell. I wear sleeves until it's around 85°F.
We had a crazy heat wave here this summer. Hit 90 a couple times. I almost moved to Greenland.