Of course, but I'm trying to keep everything as "in-scale" as possible. The idea is to provide a reasonable emulation of the real-world rules so that the same basic strategies work even if the exact numbers are different.
The simulation doesn't know about humidity or wind speed- though it does know about heat transfer co-efficients to some degree, since the player can put on warm clothes or a soaked turban (I assume that's how those things work, I'll have to go and look it up) to alter the rate at which he loses or gains heat.
If it comes right down to it, I can just say "if you get this cold, you feel cold and the words 'you feel cold' pop up on the screen", but I'd like to have it be realistic if only for its own sake.
There's also the fact that having the player know right away when there's a temperature threat isn't as fun as mentioning "oh, by the way, you're freezing/heat-stroking to death" when it's very nearly too late to do anything about it. :P