Our comfortable temperature is around 25°C. Let's set that as our baseline. In dry conditions we can bear about 90°C above that for a few minutes and only about 20°C above baseline sustained. In comparison we have many permanent settlements where days 75°C below baseline are a yearly occurrence.

If we talk about the more humid climates found in much of Europe and the US, the weaker members of our society start dying on days just 15°C above baseline.

I think we handle cold much better than heat.