With it being the season, I think Disney would prefer that you wear clothes (sorry, couldn't resist). Seriously though, you can face any kind of weather at that time. Because it is Florida, you will probably have warm weather during the day at least, although days in the 40's would not be unheard of - uncommon, but not unheard of. At night, it can get a little cool. It could be in the 80's during the day, and low 60's at night. I've gone swimming every trip we have made, so a bathing suit would be a good thing. Some shorts and some long pants, as well as t-shirts and sweatshirts would be good - prepare for anything, including a great trip! It's our favorite time of year to go.