Every day in the summer has the same forecast in Florida that except for the hurricanes, don't even know why we have weathermen. The forecast is generally partly cloudy with afternoon to evening thundershowers. Highs in the mid to low 90's. Unless there is a hurricane a brewing close, usually the thunderstorms are very short and come between 1-4pm every day. So yes, definitely bring raingear, but it's doubtful it will ruin your day. Just hang tight...As was said above, they look terribly gruesome with all their lightning, endless dark clouds and massive rain, but they only usually last an hour or so. Also a funny thing about Florida is that it can be raining across the street and be perfectly sunny where you are.