When Is Summer 2024 Usa. The first day of summer is also known as the summer solstice, and in 2024 it happens on thursday, june 20 at 4:51 p.m. The best places for a summer vacation in the usa are new york city, chicago, san diego, or san francisco for a city break.
Is the solstice the longest day of the year?โand. * the dates of summer given on this page are for the northern hemisphere.