For anyone who (like me) would prefer to see those figures in Celsius:
https://www.bbc.co.uk/weather/5140402
They don't go any higher than 32C, which isn't particularly uncomfortable (although, of course, humidity needs to be taken into account as well). It's still below body temperature, which means that it's possible to lose body heat to the air. It's when the air temperature exceeds normal body temperature that things can get a bit worrying, as it's impossible for one's body to lose heat. For example, it's going to get to 41C in Cambridge on Monday!