We went to Tuesday's party. Had spent most of the day relaxing and packing, as it was our last day. First significant rainfall since we'd been there (had a few short lived thunderstorms but this one lasted three hours mid afternoon). The air was noticibly dryer and cooler from about 5 to 8. Humidity started creeping back in gradually after that and I found myself less comfortable at the end of the night than I had when we had first started.
We were thankful we had several overcast days; Friday in Epcot under mostly sun was brutal and hot as all get out.