
Orlando was chosen as the home for Walt Disney World in large part because of the weather. It didn’t snow basically ever, and temperatures, similar to Southern California and Disneyland, were usually fairly temperate, never getting too cold. There was always the possibility of hurricanes at Disney World, but those, at least back then, were rare. That’s not to say that it doesn’t get cold in Orlando from time to time. I was just at Universal Orlando for the holidays, and the weather wasn't great. Things have gotten even colder since then, leading to the characters of Disney World bundling up, allowing fans to see them in ways they rarely do.
Fans are having a blast getting a look at what certain characters look like when it’s too cold to wear the traditional costume. Most Disney World attractions happen regardless of weather, so a little cold isn’t going to stop the parade from happening, but it will change the look of that parade.