Similarly, in the Pacific Northwest, the "true" summer often doesn't arrive until July 5th (dubbed by locals as the day the "June Gloom" fog finally burns off), but the dry, perfect weather can stretch beautifully into late September, offering a "Indian Summer" that is often the region's finest season.
This is the "textbook" summer. It is the definition taught in earth science classes, a geometric certainty. However, for the vast majority of Americans living their lives outside of observatories, this definition feels disconnected from reality. By the time the "official" first day of summer arrives in late June, much of the country has already been swimming, sweating, and running air conditioning units for weeks. what month is summer in usa