I tolerate coolness better than heat and humidity, so we go to WDW anytime after Thanksgiving to the middle of February(excluding holidays and marathons). I'd rather wear a jacket, if needed and feel refreshed rather than suffering from the heat and humidity and feeling drained of energy.
OhMari, I see where you are from Wisconsin, which is further north, than my home in Indiana. What some people call cold, in
Florida, I found to be jacket or sweatshirt weather. I think how well you handle heat and humidity can determine your dates to visit WDW. If H & H is not to your liking, then I would go to WDW during the late Nov. to early March time period.
Have a nice trip.