What season is October?

Autumn is one of the four seasons. Meteorologically, autumn in the north temperate zone is from August 23rd (summer) to165438+1October 20th (light snow). Autumn is the harvest season, and many plants mature in autumn. As the temperature drops, the leaves of many deciduous perennial plants will gradually change color, wither and fall off, leaving only branches for winter.

Folk customs are divided into four seasons according to the lunar calendar. January to March is spring, April to June is summer, July to September is autumn, and October to December is winter.

Meteorology takes March-May as spring, June-August as summer, September-165438+10 as autumn and 12-2 as winter. Then according to the solar terms: vernal equinox, that is, entering spring. The solstice of summer is to enter summer. Autumn equinox, that is, entering autumn. Winter solstice, both into the winter.

Doesn't mean that the hot summer is about to pass. Beginning of autumn is still in heat, but she hasn't come out yet. The second solar term came out in autumn, and it was still very hot in early autumn. The so-called "heat is in three volts", according to the calculation method of "three volts", beginning of autumn is often still in the "three volts" period until the summer heat, so the weather is still very hot in early autumn, and it will generally cool 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. ?

According to the average climate temperature of modern scholar Zhang Baokun, there are four seasons in a year. The index is that the average temperature is lower than 10℃ in winter, higher than 22℃ in summer, and 10~22℃ in spring and autumn respectively. The standard of average temperature in autumn adopted in meteorology is: after the intense summer heat, the average temperature for five days will be kept below 22℃, that is, it will enter autumn, and when it is lower than 10℃, it will end in autumn (average temperature: 0: 00, 6: 00, 12, 18) and enter autumn.