First Day Of Fall 2025 Weather. 21 rows fall starts at the moment when the sun is directly over the equator, going from north to south: In 2025, the exact time of the start of fall is at.

Even taking into consideration that there was no daylight saving time back then, 2024’s summer solstice is still earlier. In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.