I have been to WDW in early Nov and late Nov and also mid-Dec. Early Nov can be downright toasty!!! But later in the month, the weather is close to perfect. About low 80's -high 70's daytime, and about mid-60s at night. It can get chillier though at night. I come from NE, so traveling in Nov in shorts is not an option. I like to travel in jeans, longsleeved shirt, sweatshirt and have a windbreaker with me. That saves a ton of room in my bags. I usually wear shorts during the day with a shortsleeved shirt. At night it gets nippy, so a sweatshirt and jeans work for me. This year I think I'll be packing shorts and capris, rather than jeans. Just jeans for the flight.
There was one time in mid-Dec that it got downright cold!!! The CMs were talking about mittens and scarves!!! The cold wind cut right thru you. During the day it was fine as long as you were out in the sun, but if you were in the shade it was chilly!!! So, be prepared!!