Xiaoxue is the twentieth of the twenty-four solar terms. The time is165438+1October 22 or 23 of the Gregorian calendar every year, that is, when the sun reaches 240 degrees of the yellow meridian. "Light snow" is a solar term reflecting the climate characteristics. There is no necessary connection between the light snow in solar terms and the light snow in the weather. The meaning of "light snow" in solar terms is different from that in daily weather forecast. Xiaoxue solar term is a climate concept, which represents the climate characteristics during Xiaoxue solar term. The light snow in the weather forecast refers to the snow with less snowfall intensity.
The ancient book "Qunfangpu" said: "The light snow is cold and it will snow, but the ground is cold and the snow is not big." That is to say, in the "light snow" solar term, due to the cold weather, the form of precipitation changed from rain to snow, but at this time, because "the ground is not very cold", the number of snows is small and the amount of snow is not large, so it is called light snow.
"Light Snow" is a festival that reflects weather phenomena. There is little snow, and there is no snow on the ground. This is the original meaning of the solar term "light snow". Light snow, like rain and Grain Rain, is a solar term that directly reflects precipitation.
The light snow solar term does not necessarily snow, but refers to the light snow season, when the temperature drops to the point where it can snow. However, because the surface temperature is not low enough, even if it falls, the snowfall will be small or even absent. So whether it will snow this day depends on the current weather.