Hey Sportsguy...This is interesting as we are looking around for a new house and are trying to learn the sound patterns from both the turnpike and Meggison. What street are you located? I have actually been going around and listening at different times and wind directions in both Deluna and St Johns where we are looking at houses.
The link below shows the historical wind patterns from a local weather station. It appears that the wind direction is about equal from east or west over the course of a year. I have seen sites that say the prevailing wind in central FL is from the SW but this interactive chart seems to show that the NE is more prevalent.
It's 4am and the Leesburg airport wx station is showing a 5mph wind from the NE. I am going grab some coffee and go check things out. Yes, I'll put on my hearing aids and no I don't have anything better to do right now. lol
Prevailing historical winds