When Does Winter 2025 Start In Usa. View the yearly calendar for 2025 with federal holidays, prominent holidays, and full moon dates highlighted. Winter 2025 begins on 21 december 2025 and ends on 20 march 2025 according to the astronomical calendar.
Wet, milder, longer season for much of us. Daylight saving time began in 2025 on sunday, march 10 at 2 a.m.