When is the real autumn in the north?

The standard of average temperature in autumn adopted in meteorology is that after the intense summer heat, the average temperature for five days will be kept below 22℃, that is, when it is lower than 10℃, it will end in autumn (average temperature: 0: 00, 6: 00, 12, 18) and enter.

Autumn time in some cities of China (average temperature method);

Northeast China: September 1 Shenyang, September 6, Dalian.

North China: Beijing 1 1 in September and Zhengzhou 14 in September.

Central China: Wuhan September 30th, Changsha 65438+1October 3rd.

East China: Hangzhou 65438+10.4, Shanghai 65438+10.6.

South China: Guangzhou 165438+ 10/5, Shenzhen 165438+ 10/20.

Extended data

Climatic characteristics:

Beginning of autumn means rain, storm, humidity, etc. At the turning point of the year, it tends to decline or decrease. Seasonal changes, rainfall, rainstorm, dry and wet changes are obvious in southern China. In the northern region, these changes are not obvious, but the temperature is obvious. After entering autumn, in nature, the qi of Yin and Yang began to change, everything began to grow from lush to mature, and the climate began to transition from rainy and humid in summer to dry and rainy in autumn.

The beginning of autumn does not mean the end of hot weather. As the saying goes, "the summer heat is in dog days", according to the calculation method of "dog days", beginning of autumn is often in dog days until the summer heat, so the weather is still very hot in early autumn, and it will generally get cold after the Millennium solar terms. The watershed of summer heat is in autumn, not at the turn of summer and autumn. The climate in autumn is divided into two stages, the early autumn is sultry, and the climate tends to be dry and cool after the Mid-Autumn Festival. This is a season of alternating hot and cold. ?

Baidu Encyclopedia-Autumn

Baidu Encyclopedia-beginning of autumn