Furthermore, is this a "glass half full or glass half empty" question? Does the optimist dress for the future and the pessimist for the present? Or does the decision have nothing to do with outlook, but only with body temperature? Do cold-natured folks dress for morning and warm-natured for afternoon?
These are questions without answers, so I decide to split the difference: A leather jacket yesterday (comfortable on the way to work, boiling on the way home) but only a suit jacket today (running to the office I was so cold).
As problems go, not a major one. Soon it will be cooler inside than out. And then there will be a different set of wardrobe decisions.