Hello Heather and welcome back to the Disney Parks Moms Panel.
What a beautiful time of the year to visit Walt Disney World.
Normally, the weather should be from 58 Fahrenheit at morning and night, to 82 Fahrenheit during the sunny days.
Still, it is possible to face colder (35 F) or hotter weather (90 F).
For the weather I use wundergound website.
For pools this weather could be cold if you live in hot weather (80 F to 100 F), like me. Still, Walt Disney World does heats all the water from the main pools and water parks every day.
It is important to note that one of the two water parks could be closed for maintenance during this time, and the other could also close due to extreme weather conditions.
Use Disney´s calendar to stay up to date as your vacation approaches.
At this age, your kids will be able to enjoy all of Disney´s attractions and shows, with the exception of a few thrill rides.
All the parks will be beautifully decorated and with special Christmas events and entertainment.
For clothes we just do layers, and carry one back pack with us. The strollers are really useful to carry the extra layers.
If you have the necessary layers, you should not have any problems. Always carry the heaviest layer, as weather can change in a hurry!
Disney´s Art of Animation resort will be a great experience for a 3 year and a 4 year old, as this is one fun resort!
I highly recommend
Mickey´s Very Merry Christmas Party, as your family will be able to experience Walt Disney World in a very unique and extra magical way.
Happy to help you plan a magical Christmas vacation.
Miguel