65F? seriously? True, you're down South but up North, like where I am, we're are a bit more tolerant to the cold
I don't wear anything on my legs until temperature dips to 10C (50F).
Here it's not acorn to worry about but Canadian geese. I almost hit one this morning (rubs its tail) when it decided to change direction. First time I saw one do that. Usually it's squirrels that can't make their mind...