When Is Winter Starting 2025. Winter solstice 2025 (beginning of astronomical winter) on the day of the winter (december) solstice, the sun passes through the southernmost point of the ecliptic, that is, as far as. Learn all about the shortest day of the year—and tell us what winter means to you!
Where will it snow this winter? Early data shows that the polar vortex is likely to be weaker than normal in the winter of 2025/2025.