By me, the overnight temperature rises have usually come with precipitation behind it. The opposite has happened where temperatures drop after 9am with drier winds. I can’t exactly say it’s normal or that I’m particularly knowledgeable on the matter, but I’ve independently theorized it’s really just standing out now because I frequently look at hourly forecasts. Between hobbies and maintenance, I’m now interested in such a granular report. I didn’t always have to care this much and got by just fine with morning/afyernoon/evening/overnight