With hurricanes, it's very difficult to predict where they may be heading. I was at WDW for Hurricane Charlie in 2004 and when we went into the park that morning, it wasn't going to be too bad in Orlando and when we got back to the hotel around 3pm, the storm had shifted and did hit Orlando. I wouldn't be too worried yet. If a storm does happen to come while you are at the Parks, just make sure to follow the directions of the hotel staff and you will be fine.
Hope you have a great trip!