Thanks to all of you. I showed her all of your comments, and she packed a nice mix of clothing. She said that she ended up needing all of them, some mornings were a little breezy and in the 50s, but some days the highs were mid 80s with no breeze. I have never been to WDW in Dec. so, I was not able to be of much help on my own. Like many of you said, the forecasted temps only tell you part of what you need to know. I prefer to ask those who are present at that time.