First Day Of Fall 2025. The first day of autumn is in 2025 on september 22 (according to the astronomical definition). Autumn 2025 starts on monday, september 22nd in the northern hemisphere, with daylight time shortening and the leaves begining to fall with the changing tilt of the earth's.
The first day of fall, when is the first day of fall this year and how to celebrate. The first day of fall, september 23rd, 2025, will likely see a diverse range of weather conditions across the united states, reflecting the countryโs vast geographical expanse and.