I have found weather.com to be a little iffy. I use this link as it is more accurate. It has a long range (10 day) forecast that seldom changes too much:
Scattered showers in Florida means it might or might not rain. LOL Usually when it rains here, it doesn't last long. We rarely have those all-day type of storms, especially in the summer. Just bring some ponchos.
I was looking at the same forecast last May for our trip. Rain 3 out of our 5 days. Don't panic. We did not see one drop of rain on our entire trip. It was sunny and hot the entire week no rain until we got off the plane back home in Philadelphia where it was still raining from when we left!
I lived in Orlando for 6 months. From my experience when it rains, it is usually only for 1 hour, then it is sunny and beautiful again. I wouldnt worry too much.