First Day Of Autumn 2025 Usa Dates. Here's everything you should know about the fall. This year the autumn will start on sunday september 22, 2025 (day of the fall equinox) and will end on saturday december 21, 2025 with the winter solstice.
The first day of fall in 2025 arrives with the fall equinox on sunday, september 22, 2025, at 8:44 a.m. Twice a year, around march 20 or 21 and sept.