Dressing for internship when its really hot outside?

Weather has no effect on what you wear to a job unless you are working outside. Doesn't matter if you ride a bus or walk, that doesn't mean you can dress casually. However, a short skirt is perfectly fine. Even if it's above mid thigh. But here's the problem. You cannot wear a short skirt to work with bare legs. Pantyhose would be required or else it is not appropriate so it may not be a good option for you because pantyhose are hot. Just wear dress pants. It won't kill you. There are people who work everyday in an office and they have to wear dress pants, blouse, blazer, hose and heels. It's just a reality. You aren't working outside so you need to dress properly. I'm in Texas so I know about heat but that doesn't mean I get to wear casual cool clothes to my work. In fact, I have to wear a pant suit, pantyhose and high heels but I'm working in the A/C so it's okay.

Borrow a longer skirt or wear pants. Looking professional always comes before comfort, even on the last day of an assignment!! : }

A shirt skirt would be acceptable if it's a bit above your knees or below.

I finally went in pants. It was hot as hell, but at least everyone was sweating too :)