Originally Posted by Quadcammer
who has an interview at a starbucks?
wear a suit, regardless. Its hot...suck it up. If necessary, get there way early without your coat on, clean yourself up in the mens room (splash water on your face, etc) and then put your coat on.
To pile on with everybody else, I agree with this. Were I hiring someone, I'd be impressed with someone's ability to show up in a difficult situation looking calm, sharp, and in charge, because they took the time to put together a suit and get there early enough to make it look easy and effortless, over someone who just decided it wasn't worth the effort.
I think the khaki is totally fine for a summer interview in the heat, especially if you stick to a more formal shirt and tie. So I'd say avoid a shirt with too strong a pattern, or a button-down.