It was 41 degrees when I woke up this morning, I'm about 50 miles west on I-4 from Disney. It's 80 right now in the afternoon and the sun is very warm. January is always a crapshoot for weather, last year it dropped into the 20s when we were camping at Ft Wilderness, but I would not change any trip plans. Just pack a variety of clothes to cover the temps, day to day could change.