So the neat, tidy answer is — December, January, and February. But if you live where snow piles up in October or lingers into April, you know the real answer is: “Three, if you’re lucky. More, if you’re not.”
This is the definition most of us learned in school. Astronomical winter is determined by the tilt of the Earth's axis and its orbit around the sun. how many months of winter are there
By this definition, winter is long — but note that it starts deep into December and ends just before spring truly begins in late March. So while it covers parts of December, all of January and February, and most of March, the total duration is almost exactly 89 days (or 90 in a leap year cycle). So the neat, tidy answer is — December,
Astronomical winter is tied to the Earth’s tilt and orbit around the sun. In the Northern Hemisphere, it begins on the (around December 21 or 22, the shortest day of the year) and ends on the vernal equinox (around March 20 or 21, when day and night are roughly equal). Astronomical winter is determined by the tilt of
Meteorologists and climatologists find the shifting astronomical dates messy for record-keeping. So they divide the year into neat, three-month seasons based on temperature cycles:
If you live in a city like Minneapolis, Chicago, or Toronto, you likely consider November a "winter month" because the temperatures have already dropped, even if the solstice hasn't happened yet.