We always go the last week of May/first week of June (this year too!). Anyway, I always bring jeans and a lightweight jacket for everyone, and every year I bring them back home unworn! It is normally in the high 80's, and gets down to the mid to low 70's at night. We never use them, and they take up a ton of room on the suitcase. This year I will be brave and not take them. I figure if it gets cold, it will be a great excuse for buying a Disney sweatshirt! Have a great trip!