Well, just got back from hiking Daleville-Pearisburg and I learned some stuff on this hike....
For starters, on my quest to save weight I planned on packing 2 silk liners instead instead of taking my down bag. I figured I'd just double bag the liners - it's summer, right?
Next, I decided that I didn't need any rain gear - it's summer -if you get wet you'll dry out quickly.
Let me just say that I'm SO glad that at the last minute I decided to take my down bag. That's good.... I did NOT however take rain gear. That's bad.
What happenned is that it rained on me all day - I was soaked to the bone. At night I was around 4000' elevation, the temperature dropped, and that cold, bone chilling fog rolled in. I couldn't see more than 50 yards or so.
I was soaked to the bone and if I had only taken those 2 liners I would have been a prime candidate for hypothermia. As it turned out, I was able to strip naked, dry myself off with my pack towel and bundle up in my down bag, snug and warm. It continued to pour down rain all night and all the next day. Fortunately, the next morning I just had 12 miles left to hike into Pearisburg and get back to my truck.
I will also always take at least a plastic .99 poncho - I had to get out of my tent and move a stake - it would have been very nice to have had something to keep my dry when I left the warm confines of my bag.