1. The global warming has localized itself to Arizona.
2. All the illegal immigrants make it hotter there.
3. It's all the chilli peppers you guys eat.
4. The
oil spill in the gulf is having global affects on the weather
5. Sheriff Joe Arpaio likes it that way
6. .....
7. .....
8. .....
9. .....
10. It's summer in Arizona
But it's a dry heat, so it's not that hot.