What's the best time to travel to different regions in the U.S. (the United States)?

For a comprehensive tour of the United States, it is best to choose a time between May and October, as the climate variations among different cities are not particularly significant during this period. It is essential to avoid the harsh winter months, unless your sole destination is Hawaii for some sunshine.

Given the vast east-west and north-south span of the United States, there are considerable climate differences across the country. During winter, temperatures in some regions can plummet to below freezing, while in others, one can still enjoy a seawater bath. Summers in the United States can be extremely hot, so visitors should be prepared to "battle the heat."

However, if you are traveling to the northern part of the United States, it is advisable to bring along a thick sweater or a warm jacket. Even in summer, the northern regions tend to be relatively cool, and there can even be a chill in the evenings.