What are the signs of light snow and light rain?

Rain in the light snow season indicates that the weather will get colder and colder and the precipitation will gradually increase.

Light snow solar terms, like heavy snow solar terms, reflect the changing trend of temperature and precipitation, and are the reflection of ancient farming culture on festivals. Light snow is a solar term with high frequency of cold wave and strong cold air activity. The arrival of the light snow solar term means that the weather is getting colder and colder and the precipitation is gradually increasing.

During the light snow solar term, a relatively stable meridional circulation has been established in East Asia, and low pressure or trough often appears in Siberia. When moving eastward, there will be a large-scale cold air heading south, and there will be a large-scale gale and cooling weather in the southeast of China. Light snow is a solar term reflecting the climate characteristics.

About the light snow solar terms:

The explanation in the "Twenty-four Solar Terms" is: "In mid-October, it rained and the cold was thin, so it condensed into snow. The words of the villain are not prosperous. " It means that in the middle of October of the lunar calendar, because the weather is getting colder and colder, the rain in the sky will condense into snow because of the cold, but the snow in this period is not big, so it is called "light snow".

There is also an explanation for Xiaoxue in the ancient book Qunfangpu: "Xiaoxue is cold, and it will snow, but the ground is even cold and the snow is not big." The meaning is almost the same, referring to the "light snow" solar term. Because the weather is getting cold, the precipitation turns from rain to snow, but this time it is either too cold or "the ground is not very cold", so the amount of snow is not large and the number of snows is less.