165438+1October15 ~165438+1October What season is it, autumn or winter?

Meteorologically, the autumn in the north temperate zone is from August 23rd (summer) to165438+1October 20th (light snow). Autumn in the south temperate zone is from February 19 (rain in the northern hemisphere) to May 2 1 (xiaoman in the northern hemisphere).

Divide four seasons according to climate and average temperature. The index is that the average temperature is below 10℃ in winter, above 22℃ in summer, and 10~22℃ in spring and autumn respectively. July to September in the lunar calendar, autumnal equinox to beginning of winter, September to 165438+ October in the solar calendar, and autumnal equinox to winter solstice in astronomy. In China, autumn begins in early autumn, passes through early autumn, Mid-Autumn Festival and late autumn, and finally ends in early winter.

Extended information China traditionally takes the four seasons as the starting point, beginning of spring as the starting point of spring, and so on. In the west, bisection is the starting point of dividing the four seasons, vernal equinox is the starting point of spring, and so on. According to the standard of climate itself-waiting temperature (average temperature of five days), summer is divided into continuous periods with average temperature above 22℃. Winter-a continuous period when the average temperature is below 10℃. The period between Spring and Autumn-10 and 22℃.

Seasons divided according to astronomical factors. Because the axis of the earth's rotation is inclined to its orbital plane around the sun (that is, the ecliptic plane), the change of solar radiation on the earth's surface circulates regularly once a year. Every year in the same month, all localities generally have their own climate characteristics. In temperate regions, the hottest period receiving the most solar radiation is usually called summer, the coldest period receiving the least solar radiation is called winter, and the transitional period between them is called spring and autumn.

Baidu Encyclopedia-Autumn (Season)

Baidu Encyclopedia-Seasons (atmospheric science and climatology terms)