The Sea Wasp (Ryk E. Spoor)

Heh. That's below freezing at near zero-humidity. The heat just gets sucked out of you out in the High Desert. Plan on longjohns, thick socks, and boots with thick soles. layers around your torso, and a good knit cap.

BTW, Scorpions are attracted by body heat, and will scuttle into boxes, coolers, cases, discarded jackets, and pretty much anywhere else they can hide. Then of course there are the tarantulas, rattlers, and those agonized screams of the damned? Just coyotes. They rarely attack people, unless they're rabid.