The official start of summer in the United States depends on whether you follow the sun or the calendar. Astronomically, summer 2026 begins on . However, for many Americans, the season's start is defined by weather patterns, school holidays, or local traditions. Two Ways to Define Summer
In American popular culture, summer is often defined by leisure rather than science. For many, summer "unofficially" begins on (the last Monday in May). Meteorological Versus Astronomical Seasons | News when does summer start in usa
While the solstice varies, meteorologists use a fixed schedule to simplify climate record-keeping. June 1 The official start of summer in the United
The most traditional and widely cited definition, especially on calendars and in popular media, is . This start date is determined by the Earth's 23.5-degree axial tilt and its orbit around the sun. Two Ways to Define Summer In American popular