To be honest, I don't have many (or really any) Summer clothes after living in San Francisco for 5 1/2 years. So when I go to the desert and it reaches 85 degrees I feel hot and I'm not sure what to wear. It's pretty ridiculous, I know... but you get used to the stable 55-65 degrees in SF.
I picked these shorts up at Zara, and besides getting wrinkly in my suitcase they've done me well. They're nice and loose and go with practically everything. I can even go hiking in these guys.
One of my favorite things to do in Palm Springs is to drive around and look at all of the beautifully simple architecture. This one above is definitely a dream home.