Degrees in Fahrenheit. His temperature max is 2282 degrees (Hot as volcanic basalt), he'd last at this heat for a minute, at his best condition. As for his speed, I can't really find a source, so what would you think would be a reasonable speed?
so how is he able to A. still be alive after three bullets through the chest,three through the head, and me strangling him. Also you yourself stated his maximum temperature above meaning he cannot simply go supernova, and I don't believe he can simply make an exit.