When Is Fall 2024 In Usa Dates. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall. The next change of season will take place on december 21, 2024 (1st day of winter).

According to the farmer’s almanac, the exact time of the autumnal equinox in the. * the dates of the seasons given on this page are for the northern hemisphere.