My son is olive skinned, taking more after my Italian father than my German mother. But he got burned yesterday at work, arms and neck. Cool start yesterday, but heat for the afternoon. I asked if he was ok with short sleeves. "It's gonna be eighty degrees when you pick me up."
Same forecast for today, but he wore sleeves. Some have to learn by doing, not by listening.
Ever wonder why those range riding cowboys are always depicted wearing thick leather coats in 100F weather?
Go there, you'll find out. Worse yet, try Arizona our northern Mexico.
Super clear skies, 53F/12C to start and supposed to top 80F this afternoon.