I could be because your body generates its own heat, and it has to be regulated so that the core stays at 98.4. This means getting rid of heat to the surroundings. As ambient temperature gets closer to 98.4, this gets increasingly difficult. So more drastic measures, such as sweating buckets, have to be used.
If air temperature did reach 98.4, you'd bit a bit worse off than 'uncomfortable'.
The body does seem to adapt to the ambient temperature after a while EG you go on hols to Greece for a fortnight, you'll feel cold when you come back to England. It seems a lot worse, and more noticeable, when the temperature suddenly gets a lot hotter than normal, like it has.
(Is this what your question was about?)