The best time to visit Lancaster, New Hampshire, is during the summer months, from June to August, or in the autumn, from September to October.Summer offers warm weather, great for outdoor activities like hiking and fishing in the surrounding White Mountains. The days are long, and you'll find local events and farmers' markets. It's an ideal time for families looking to enjoy nature and spend time together outdoors.Autumn is renowned for its spectacular foliage. The hillsides erupt in vibrant reds, oranges, and yellows, making it a popular time for scenic drives and photography. This season is particularly appealing to couples seeking a romantic getaway amidst breathtaking natural beauty.