One of my granddaddys was retired for 20 yrs before he died ..
and never left the house to "do his business" without being in a coat and tie and wearing a hat. He might go pick up the yard boy in khakis and a penguin sports shirt, but that was as low as he'd go in public. That coat and tie had to be hot in August in Albany, GA, but I never saw him sweat in it. Old school to the hilt.