answer:I have made it through consecutive days above 115 F (116, 117), with cooling off at night down to the low 90s, heat trapped in the house. I was able to get what I needed done, but not much else. The only consolation was there was no humidity. But really, above 110, lack of humidity is no consolation. Because English measurements are experiential, anything above 100 F is what most people would consider as too hot.