The weather characteristics of Tomb-Sweeping Day.

The snow and ice melt, the vegetation is green, the weather is sunny, and everything is thriving ... At this time, the sun reaches longitude 15, and it comes to the fifth Qingming among the 24 solar terms.

During the Qingming Festival, the temperature rises obviously. The average annual temperature in Hebei Province is about 13.2℃, and the temperature rises rapidly during the day. The average maximum temperature in Baoding, Langfang and the south has reached 20℃. The warmer weather is a good time for spring ploughing and sowing, so there is a saying that "Qingming and Grain Rain are connected, and sowing cannot be postponed".

Therefore, farmers should pay attention to resisting spring drought, promoting spring irrigation and ensuring spring sowing while doing a good job of storing water and preserving soil moisture. Meteorological departments should also pay attention to the favorable weather conditions, implement artificial precipitation enhancement, increase water resources, and do a good job in afforestation in spring.

Du Mu, a poet in the Tang Dynasty, once described Tomb-Sweeping Day as "rainy and rainy", but in fact this refers to the climate characteristics in the south of the Yangtze River, which is quite different from that in the north of China. According to the statistics of climate data, the average precipitation during the Qingming period in Hebei Province in the past 30 years is about 9.5 mm, and the rain is not too much, especially for crops that have begun to grow vigorously and sow in spring.