Scorpions are more common in less developed areas like north Scottsdale and Surpise. There are some in Tempe, but most of the concrete PHX doesn't have too many.

In the winter, they dig underground and hibernate so you don't have any walking around.

They come out in summer, at night..usually in areas with rocks..and they are shy. They will almost always avoid you and if they DO sting you, it's not fatal unless you are a kid, elderly, or particularly allergic..they CAN kill small pets though.

They are smaller than the african ones seen in movies. Most of them are the size of bees except for the longer arms.