Quick metric conversion (Celsius)...
50 Fahrenheit = 10 Celsius
75 Fahrenheit = 24 Celsius
100 Fahrenheit = 38 Celsius
The hottest I've played was at 40 Celsius (not a full match, practice session only), I couldn't even do overheads because of how bright the sun was!
The lowest was probably in the low teens Celsius. Took ages to warm up, need to move constantly.