according to the hurricane center, hurricane season lasts for 6 month of the year (ending on November 30th)...
it's hard to say whether last year and this year were exceptional seasons in Florida or whether this is going to be the norm..
hurricanes are unpredictable...
however as far as orlando goes, the strength of the storms is typically much less than what happens on the coasts (or the keys)....hurricanes tend to lose some power as they go overland....
but orlando can be hit as has happened in the past and apparently is happening today....however, if you're staying at a place like WDW, where they are unbelievably well organized and the buildings are very well built, the chances of anything happening to you are quite small (assuming you follow instructions)...we were there one year for a hurricane and it was very impressive how organized disney is...
yes orlando airport is closed when a hurricane hits orlando....but pretty soon after the storm passes it re-opens....so usually it's only closed for a day or two....of course that can take a good chunk out of your vacation...
i don't really know what to tell you....we went to orlando 3 times this year...in July, in August and then again in September....all three times there were hurricanes threatening florida....all three times we heard that lots of people cancelled....we didn't.....and all three times the hurricanes ended up going away without hitting florida and we had spectacular weather..
on the other hand, Wilma's hitting florida and orlando today...so...
anywhere you go, you could have bad weather....or bad events...
geez...i could cancel our trip to london because of fears of terrorism.....
as someone on another board wrote, you could avoid a trip to california because of earthquakes...or to thailand because of tsunamis.....or to anywhere in the middle of the US, because of tornadoes....do you really decide where you're going to go on vacation based on stuff like that?...
something could always happen........