Ha, beat it today, -40 today, but no wind. Still took my pooch for a walk. A quick walk. No such thing as too cold, only your not dressed properly.I would get busy explaining why I HAD to stay in bed. When I saw almost minus 50 degrees outside, I suddenly developed a bad case of the flu.
I regularly go running in 100°f temp when humidity is low. Where I’m at in the desert southwest of the US we use evaporative coolers. Basically using the principle of evaporation to cool the air coming in. We just had a couple weeks of 38°c+ weather, but the humidity was in the single digits. The cooler worked amazingly! The bigger concern is fires starting from everything drying out. But, as soon as the humidity is over 30% these coolers become worthless. Now it’s rainy and around 30° but running almost feels worse.I think most of us often underrate humidity when talking about temperature. High temperature + humidity is a death blow. I can get along easily in a 40℃ weather if the humidity is low like 20-30%. I wouldn't even sweat but if the temperature is 32℃ with a high 65+ humidity then the body sweats quite a lot and it becomes extremely irritating. There are days in the summer when I bathe 3 times a day just to feel cool for a bit.
I would love to know how it feels to live in places around the equatorial line like the country Ecuador where the temperature is kind of always perfect.