Jamaica State Park

Located in in Jamaica, VT. off of Rt. 100.
285 Salmon Hole Ln,
Jamaica, Vermont 05343
Summer: 802-874-4600 / Winter: 802-885-8891 & 800-299-3071
Season: Late April to October (Columbus Day)
http://www.vtstateparks.com/jamaica/index.htm

Dave Swider says that this state park campground features  lean-tos, so you can stay dry and warm, no matter how crappy the weather.