I'm in Houston, Tx. Currently 95 degrees and humid. I sell new homes on site at new subdivisions. The model home is that I work out of, is air conditioned and comfortable. But all day long I go in and out of the model home. Usually to homes in various stages of construction. They, of course, have no A/C, and are often muddy! The dress code is "professional casual". This translates to dress pants and a dress shirt. Most sales people have a coat in the office(which they generally don't wear). Some wear a tie and some don't. I love to wear suits, but it might not be a wise choice outdoors in Houston, in July and August. So, I've started to wear a suit without a tie. And without the coat when I'm outside. Given the circumstances, would you still wear a suit(even without a tie) or just go "professional casual" for the summer?