Visitors may continue to enjoy the park during the off season by parking outside the gate and walking in during these same hours. Please be aware that facilities are closed during the off season. Winter gate opening is just after the first plowable snow until the snow leaves. The Park is plowed to the toll booth area. The parks offers snowmobile, snowshoe, and groomed cross-country ski trails with access to Moosehead Lake. The off season telephone number is (207) 941-4014.

Boaters and campers enjoy the Moosehead region through warm weather months, followed by hunters in October and November and ice fishermen and snowmobilers in mid-winter. Fishing on Moosehead Lake for salmon and trout is usually best in the weeks following ice out (typically early to mid-May) or when the waters cool in September.

Established in 1961, Lily Bay State Park was created primarily from woodland donated to the State by Scott Paper Company.