My family and I were there this past January, actually December 30 - January 7. We thought that it would be a great time to go when the crowds would be low. We were very disappointed. The parks were very crowded and we waited very long for most rides. The weather was nice for the beginning of the week, shorts and t-shirts with sweatshirts/jackets at night but the end of the week got quite cold, mid 40's. Not sure if it was so crowded because of the Happiest Celebration on Earth or what. The Disney marathon was also on January 7th so that may have had something to do with it. Just a little info for you from this year. Either way, it's Disney and you'll have a great time!!!!!

Enjoy your trip!!