I once messed with temp values for the hell of it. It was interesting, to say at the least.
Picked a nice ocean site, probably was going to make a fort that'd face the water, but right after embarking the dwarves were greeted by a huge explosion of steam. The ocean vaporised instantly upon arrival, same for all the water that attempted to refill the spot.
That was warning flag #1. #2 came a few moments after I figured I probably messed with the values a bit too much, when I checked my stocks and saw no booze mentioned at all. That too had vaporised instantly. At this point it was the plan to dig like hell into the side of a nearby hill and move everything still intact inside.
At this point my wagon puller animals melted to death. So badly that their corpses instantly disappeared. I also noticed that most of the clothes on my dwarves were gone. Inspecting more, I found that they were being damaged by the enviroment. Some slower than others, I guess some materials were more resistant to heat than others, but eventually they were all running around naked after their silk caps or whatever finally poofed out of existence.
I don't think I played very long on that fort. At least I can't remember doing so. Would have been interesting, although I figure everything trying to arrive, from wild beasts to invaders, would have met the same fate as my animals did.
Funny though that none of the dwarves had the same problem despite lacking any protection from the elements. Or maybe they would have had to stay longer outside like the animals did and the random trips to cool underground kept them alive?