Soon, the fall foliage will be at its prime, and you will be stunned by so many colors—Indian Summer at its best! And the perfect opportunity to discover the New England States and Eastern Canada. Make up your fall travel plans and prepare for an Indian Summer road trip!

After Labor Day has passed, it seems almost any warm day in the northern part of the United States is referred to by most people as “Indian Summer.” And while their mistake is certainly not of the earthshaking variety, these casual observers are, for the most part, in error.

Indian Summer is a significant natural phenomenon in North America. The best months to experience it are mid-September to the end of October. Popular places include Vermont, New Hampshire, and Acadia National Park in Maine.

The weather at these two locations is a prime example of Indian summer, a period of abnormally warm weather after the killing freeze of autumn. Fall foliage in Victory, Vermont, in early...

Indian summer evolved over the centuries from a pioneer superstition to the poet’s best friend to the meteorologists’ whipping boy. It is a period of unusually warm, still days that follow a cold spell. The atmosphere is hazy or smoky, the barometric pressure is high and the nights are clear and chilly.