Florida much like south Louisiana where I am can change at any minute from hour to hour everyday at this time of year fall/winter!! Lol. Wait until the forecast is within a day it 2 for each day. The long term forecasts 10+ days change very often for WDW and my weather here. We will be there 10/13-10/26 so I'm in the same boat as you. It literally has changed every time I look at the weather as its getting closer. Lol. Weather patterns in the Fall/Winter are all over the place in Florida and much of the south. Usually Oct - Dec there is not a large amount of rain in Florida (as per our trips this time of year every year Oct-Dec and the average yearly rainfall amounts those months) No use in worrying about it. Just be prepared for a variety of weather.