What Months Is Fall 2025. To avoid confusion, many prefer to reference the meteorological seasons: Find out the date when autumn (or fall) is in 2025 and count down the days until autumn (or fall) with a countdown timer.
Fall starts at the moment when the sun is directly over the equator, going from north to south: The beginning of fall in the united states and the northern hemisphere is marked by the september equinox, also known as the autumn equinox.