First Day Of Fall 2025 Time Frame. 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. On rare occasions, it can fall on.

In 2025, the fall equinox in the united states will occur on sunday, sept. Here are the equinox and solstice dates—plus, answers to common questions about the.