"In early autumn, it was chilly; In the late autumn, it is hot to death. " Why do you say that? Is there any basis?

This is a folk proverb, which has been passed down from mouth to mouth. Sometimes it may have a corresponding effect. In this regard, our meteorological department wants to make a good weather forecast, and we do everything possible to do it well. Not only do we use modern science, as the director said, the most advanced large computer in the world to calculate the weather forecast, but we also attach great importance to some folk weather proverbs. Just now, we made a special research and statistics on this proverb. The so-called beginning of autumn is early and beginning of autumn is late, which means that the time in beginning of autumn appears in the morning or afternoon. Appear in the morning, we say it is early autumn, and appear in the afternoon is early autumn night. Through the statistics of early autumn and late autumn, we find that the relative relationship between early autumn and late autumn is not clear, corresponding to the weather in the last ten days of late beginning of autumn, or more than half a month. It should be said that the relative weather during this period after early autumn is relatively cold, or rather early. According to our statistics, after early autumn, some years are not only not like this, but also hotter than usual, while in late autumn, sometimes it is very hot and sometimes it is very cold. Especially in recent years, in the last ten years, it may be that the frequency of beginning of autumn is earlier than that of beginning of autumn, and the whole temperature seems to be on the high side in this decade, which does not mean that it will get cold as soon as it arrives in beginning of autumn. It's not that it's early autumn and it's freezing. Therefore, some folk proverbs have scientific basis, so we should find out the scientific reasons for their popularization and application. And there are some proverbs, which may be circulated more, not necessarily accurate, and have certain scientific truth. In this case, they may not work well.