This from the Friends of Acadia Facebook site:
Acadia National Park Seasonal Closures for Winter 2012-2013:
On October 31, Hulls Cove Visitor Center and Sand Beach Entrance Station will close for the season. The Park Loop Road will close on December 1 unless there is a major snowstorm before then. When it is closed, there are two miles left open from Schooner Head overlook to Otter Cliff Road. Access to this section is via Schooner Head Road in Bar Harbor. Jordan Pond can be accessed via Jordan Pond Road in Seal Harbor. In November, park roads may close temporarily depending on the weather.
Camping at Blackwoods Campground will be primitive tent camping only beginning on December 1 and lasting through March 31.The access road to Blackwoods will not be open or plowed. Camping will require walking in and carrying everything out and is free of charge during these dates, but a permit must be obtained in advance at parkEdited: 2:20 pm, October 22, 2012