How Long Till Summer 2025 Usa. Starts on june 20, 2025, at 4:51 pm and lasts until september 22, 2025, at 8:44 am (93 days) In 2025, these are the astronomical dates and times for the start of each season:

With the arrival of the winter solstice comes both the shortest day and longest night of 2024. This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox.