There are always lots of threats building in the ocean between Africa and the Southeastern US at this time of year! But there is no way to know what will happen two weeks from now. If there will be a storm in the area when you are there, it probably hasn't even formed yet.
Just remember, prior to last year, WDW had only been closed ONE DAY IN 33 YEARS due to weather.
Go, enjoy, and don't worry the possibility of some rain!
Bob