Much like the rule about white shoes, Cowboys around here have a rule about straw hats: Straw hats between Memorial Day and Labor Day only.
My understanding is that this is mostly true in Cowboy Culture, or should I say Cowboy Couture. When it comes to his hat, my cowboy is fashion conscious, even if it means toughing out a few hot days in late May until Memorial Day arrives.
Now, when I met him in 1995, he was mixing and matching black shoes and a brown belt… it was nearly a deal breaker for my fashion taste. But, I was able to overlook the belt and shoe problem since this view was so much better.