i've read that they are built to handle not only extreme cold temperatures, but extreme heat.
I have a husky and we live in Tucson Arizona. Most of the time here it's from about 80-110 degrees fair and hight. She still loves to go out though and has a lot of fun. Just make sure it has a lot of water.
Extreme heat?! No...please make sure the pup has plenty of water, shade or even a small pool or something. They can be fine, happy and adapt to a warmer climate but they'll need some help too.