I had to make some adjustments in my summer wardrobe this year, as this is the first year I've worked in the summer. I tend to wear Athleta type dresses, short skirts/skorts and tanks, or capris. A lot of what I wear is not OK for work, although I adjust for when I am going to someone's house who does not have AC. I have a few nicer sleeveless dresses I wore teaching, but they are not so comfortable for getting in and out of the car all day, like I do now. And, they are getting dated.
One thing I learned from living in AZ is that it's cooler to wear a dress. Nothing rubbing on your waist band. I never wear shorts, unless it's for an athletic activity. I feel more comfortable in capris.