John W. from Pittsburgh, PA on 7/3/2016 9:14:18 PM:
Don't know about Harper's Ferry but pretty much anywhere along the C&O will be wet even days after it rains. Especially where there is heavy tree cover. The sun just doesn't get through where the canopy is thick and does not allow the trail to dry out as one would expect. That's not to say some spots won't be dryer than others but the majority of the trail will be wet after rain. Expect to hit puddles and get a bit of mud and water on you. After a while you just plow right through the puddles as it makes no difference (you're already covered in mud and sweat!). Just make sure you keep your tent, sleeping bag, and clothes dry in plastic bags in your panniers. Happy riding!