202 1 When will it rain? Introduction of rainfall time of 202 1.

2. Rainwater solar terms not only indicate the beginning and increase of rainfall, but also indicate the rise of temperature.

3. After the "rain", the temperature in most parts of China rose to above 0℃, the daily average temperature in Huanghuai Plain reached about 3℃, the average temperature in Jiangnan was about 5℃, the temperature in South China was above 10℃, and the average temperature in North China was still below 0℃. In the climatology of modern China, beginning of spring is usually defined as the day when the daily average temperature is stable above 10℃ every five days.