First Day Of Summer 2025 Usa. The first day of summer arrives with the solstice this year on thursday, june 20, 2025 at 4:51 p.m. The true solstice will arrive in the northern hemisphere at exactly 4:51 p.m.
The first day of summer arrives with the solstice this year on thursday, june 20, 2025 at 4:51 p.m. June, july, and august 2025 combined were about 0.2 degrees fahrenheit (about 0.1 degrees celsius) warmer globally than any other summer in nasaโs record โ narrowly.