We've been down there 3 times in Dec and each time has been so different with temps. varying on a daily basis.
We will be planning our next Dec. trip for 2005.
Our last Dec. trip was in 2000 and for the most part it was really nice with shorts and swimming in the daytime with jeans and a light jacket in the evenings but for a few days we froze.We were at
MVMCP around the 5th of Dec that year and it was so cold that the "fake" snow on Main St. could have very well been real.
Also the Poly Luau was nearly cancelled for us as it was really cool. I ended up with a really bad cold that year.
I would advise you to prepare yourself for all types of weather. It's the only place that we've ever been that has weather change so rapidly but it really doesn't matter as WDW is all that counts be it cold or warm.
Kelly I'm laughing at your comment about us Canadians as the same thing happened to us a few years ago on Logboat Key in Sarasota when it "cooled" down a wee bit but it was still warm enough for shorts and evryone we spoke to that day said we must have been from Canada!
The "snowbirds" and locals were all running around with heavy coats, gloves and touques!