How cold is too cold for you and how hot is too hot?

I have endured sub-zero temperatures during my time in North Dakota to find that I can tolerate brutal winters much better than hot summers. However, I do have my limits. Anything above zero is perfectly tolerable to me, whether it be ‎5℉ or ‎20℉. Anything above zero, I can handle. Hell, I could even enjoy those temperatures. As far as the heat goes, my tolerance for it is much lower. I'd say after 85℉ I won't be able to stop bitching about how hot it is.