202 1 when did the national weather start to cool down obviously? 202 1 when did the national weather start to cool down obviously?

The temperature of 1 and 202 1 began to drop obviously in September, but it depends on your area.

Everyone knows that the coming of autumn will make the weather cool, but it will take some time to cool after the beginning of autumn. As the saying goes, "autumn tiger" refers to the weather changes after beginning of autumn. After beginning of autumn has entered autumn, the temperature will gradually cool down, but it will not have an immediate effect. In the third solar term in autumn, the temperature has basically dropped and it has entered cool autumn weather.