Isn't it very cold after the rain?

The solar term in the 24 solar terms begins when the longitude of the sun reaches 330 degrees. At this time, the temperature rises, the snow melts and the precipitation increases, hence the name rain.

Rain solar terms, westerly jet, the southern branch of East Asia, weakened obviously, the adjustment and conversion period of long wave ridge shortened, Mongolian high and Aleutian low weakened obviously, and the weather process prevailing in Jianghuai area also changed obviously. Before and after the influence of cold air, the temperature changes greatly, and when cold and warm air masses meet, there will be continuous rain and snow.

According to the situation of rain and snow, some weather proverbs predict the weather in the later period, such as "Rain is cloudy", "Rain falls, Grain Rain is cloudy", "Cold rain, warm shock", "Warm rain, cold shock" and "When it rains in the east, it will rain on rainy days".

After the arrival of the rain solar term, the temperature changes greatly, so people should prevent the occurrence of early spring epidemics such as colds.

The weather characteristics of rain and solar terms have great influence on the growth of overwintering crops. As the agricultural proverb says, "Rain and dew are good crops, and Da Chun and Koharu are treasures." According to the weather characteristics, the vast rural areas should weed and fertilize the intertillage crops such as Sanmai, clear ditches and bury soil moisture to prepare for drainage and waterlogging prevention.