I left my house to run an errand at 8:00 this morning in shorts, t-shirt, unzipped hoodie, socks and sneakers, and was comfy. I came back and worked in teh yeard for about an hour, and was comfy.
I'm about to ditch the socks and sneakers for sandals, although you could be quite comfy in socks/sneaks all day. I am still wearing the hoodie, although I expect to be taking that off in a couple of hours.
At night it can still go into the 50's though.
I'd plan on generally warm weather clothes that can be worn in layers and added taken off as needed. You will all need a sweatshirt/sweater/hoodie for early mornings and evenings. As soon as the sun goes down it feels chilly. It was WICKED windy when I left work at 7:00 last night, and it was a cool wind--would have felt great on a 90 degree day, I put up the convertible top as it was 74 out, and with that wind it felt 60.
We could still get a colder day, so I'd make sure that everyone ahd a pair of long pants for evenings or that oddball day.
Anne