When will it get cold?

The weather usually turns cold in September this year for the following reasons:

Look at the region, after all, there is a big difference between the north and the south, but in the past, the weather usually came to September, and after beginning of autumn was in accordance with the 24 solar terms, the weather began to get cold. The difference between the north and the south is different. It will be a little later in the south, maybe after 10 1 1 month. It should be earlier in the north, and it will start to get cold after September.