Why is September much hotter than March?

There is an autumn tiger in September, when the weather gets hot again.

After beginning of autumn, he was still in the dog days, and the autumn tiger was eyeing him. "Autumn Tiger" is a folk description of the short-term high temperature weather in beginning of autumn, which generally appears at the turn of August and September and lasts for about 7- 15 days.

Meteorology, the highest temperature is above 35 degrees Celsius for five consecutive days after the summer solar terms, and it is sunny and sunny for several consecutive days, and people feel hot. This weather can be called "autumn tiger".

Extended data:

Beginning of autumn "and other 24 solar terms belong to astronomy. In order to sow and harvest in time, it is necessary to distinguish the seasons accurately, so the ancients set the 24 solar terms in the form of "vertical pole silhouette". Due to the climate difference between north and south, it is easy to find that the real climate does not match the solar terms.

In meteorological sense, the criterion of "autumn" depends on the change of temperature. When the average temperature is below 22 degrees Celsius for five consecutive days, the first day of these five days is the "autumn" day of that year.

People's Network-Why is the weather still hot after beginning of autumn (window of knowledge)