I did the same 'waterfall tour' a couple summers ago when I went on a hiking trip. If course, I intentionally went there during summer, expecting summer weather, lol. I think it was probably overall more comfortable then, as compared to your "fall" trip. I remember the humidity being pretty low.
It is gorgeous out there, and some of my best ever shots were taken in that area. I still want to get out to Canaan during winter and do some snowshoeing. With my schedule, it pretty much has to be the first week in Jan, but the weather has not cooperated the past 2 winters. Both times the beaches beat Canaan for significant snow, so I went there instead. Go figure.