The best times to visit Greenville are during the summer months, from June to August, and the autumn, specifically September and early October.Summer offers the warmest weather, with average temperatures in the low to mid-20s Celsius, making it ideal for outdoor activities. The days are long, and the lake is superb for swimming, boating, and fishing. Most local businesses and tour operators are fully operational during this period, offering a wide range of excursions from scenic seaplane tours over Moosehead Lake to guided wildlife expeditions.Autumn brings cooler, crisp air and the famed New England fall foliage. The landscape around Moosehead Lake transforms into a spectacular display of reds, oranges, and yellows, typically peaking in late September to early October. This season is superb for scenic drives, hiking, and photography. While some water-based activities might be winding down, boat tours are still available for viewing the colourful shores.For those interested in winter sports like snowmobiling, ice fishing, or cross-country skiing, the period from late December to March offers ample snow and frozen lake conditions.