Originally Posted By RoadTrip Lines on December 31 and January 1 will be some of the longest of the year. After that lines will rapidly decrease as the week goes on. Average weather that time of year is high of 72 and low of 50. It can occasionally be MUCH COLDER than that though. I've been at WDW in January where highs barely cracked 50 and lows were below freezing. Make sure you have clothes to handle anything. I've also been at WDW in January where the highs were in the 80's the entire time I was there.
Originally Posted By gaston lives I live in the mountains of Colorado, so I have plenty o' gear for that.