September is the most popular time to visit Lee, New Hampshire, as it marks the transition into autumn, bringing vibrant foliage and a sense of tranquillity. The peak season runs from July to September, attracting nature enthusiasts and families eager to soak in the stunning landscapes and partake in outdoor activities. During this time, visitors can enjoy pleasant temperatures averaging between 15 to 24 degrees Celsius, making it ideal for hiking, biking, and exploring the charming local attractions.For those who appreciate a quieter experience, consider planning your visit in December. While this month is considered the low season, it offers a unique charm, with the area often blanketed in snow and a peaceful atmosphere superb for cosy retreats. The winter scenery can be breathtaking, and you may find great value in holiday rentals during this time.Ultimately, your choice depends on whether you prefer the bustling energy of late summer and early autumn or the serene beauty of winter in Lee.