What really gets me is humidity (which usually comes along with heat in the American midwest). I detest being even remotely damp (unless I am submerged in water, but even then getting in and out of water is highly unpleasant - then it’s the change from dry to wet or wet to dry that gets me, I think), including being in high humidity and also including sweating even a tiny bit. So even if it isn’t humid, I’d rather be too cool than too warm because at least I wouldn’t sweat. I used to have a high heat tolerance (around 80 F was optimal for me and I would wear a jacket even in summer because it didn’t make me too hot outside but air conditioning inside was usually too cold for me), but when I had lymphoma I would randomly get hot/sweaty, and it seems to have thrown my internal thermostat off even afterward.
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Yet in my new wildness and freedom I almost welcome the bitterness of alienage. For although nepenthe has calmed me, I know always that I am an outsider; a stranger in this century and among those who are still men.
-H. P. Lovecraft, "The Outsider"