Winter in Central Florida typically means lots of sunshine and temperatures that dip down into the 70s, or possibly the 60s during a cold snap. Sure, at night the thermometer can get close to freezing, but that's not the norm, and you're never going to get stuck in a snowfall.
Actually, you could play in the snow and enjoy frigid temperatures at the theme parks and attractions. This list has three places to find the chill this winter (and one of them has it all year long). You can shiver as you watch your breath billow out into a cloud and even make a snowball or hop on a tube for some sledding. Check out the list accompanying this article to see where and when you can have all this fun.
Two of the places are theme parks, while the third is at a hotel/resort. One includes the cold with your regular park admission, while the other two are separately ticketed events.