When Will Winter End 2025. By the meteorological calendar, the first day of winter is always 1 december; Starts on december 21, 2025, at 4:21 am and lasts until march 20, 2026, at 5:01 am (93 days) the times correspond to the eastern time (et) time zone and will vary in different states.
Fall begins with the autumnal equinox, monday, september 22, 2025, 2:19 p.m. By the meteorological calendar, the first day of winter is always 1 december;