The best time to visit Glen, New Hampshire, depends on your preferred activities, with distinct advantages in both summer and fall.For families seeking warm-weather outdoor activities, July and August are ideal. During these months, the weather is pleasant for exploring Story Land, a popular children's theme park located directly in Glen, or enjoying the outdoor attractions at Attitash Mountain Resort nearby. The Saco River also offers opportunities for tubing and kayaking during this time.Couples and solo travelers who appreciate scenic beauty and outdoor adventures will find September and early October to be the most rewarding. This period showcases the stunning fall foliage of the White Mountains, making it great for scenic drives through Crawford Notch or Kancamagus Highway. Hiking trails, ranging from easy strolls to challenging ascents, are particularly enjoyable with cooler temperatures and vibrant colors.