We get EVERYTHING in New England!
It depends how porous your hair .... Tiffany's book says that porous hair will drink water from the atmosphere until the hair is swollen in high moisture areas.
This gets really tricky because so many of our products contain humectants. I'm med to high and honestly never had any issues last Summer (knock on wood) Granted I wasn't paying attention to Dews last Summer either. However, it seemed the hotter/wetter it was the better the honey worked for me! As I said earlier, in order to get the effect I want from the Honey rinse the dews need to be even higher then 50. I say keep going, maybe use a LI if it's especially wet out or a pomade. You could also cut back the amt. you use accordingly. HTH!