What is the saying that it rains on rainy days?

If it rains and it rains heavily, and the rain collects in the whole lotus pond, then it will rain and plum rain frequently throughout the autumn.

Besides, this rainy weather will last for a long time until the first frost. Therefore, if it rains on a rainy day, it is a bad omen. After that, it will continue to rain, and crops will be reduced, resulting in no harvest. Therefore, in order to prevent floods, we must arrange the drainage of crops in advance to minimize the impact of rainy days.

There is a saying that "more thunder and less rain, continuous drizzle drops to autumn", which means there will be a lot of rainy weather in autumn. It means that if it thunders and rains on rainy days, the whole autumn will be covered with rain, with frequent rain and few sunny days.

Generally speaking, there are frequent thunderstorms near the solstice in summer, but after arriving in beginning of autumn, this kind of weather will become less and less. It basically only rains when it comes out, and it is impossible to thunder.

Rainy weather:

The temperature in most parts of the south is usually below 30 degrees. The summer high temperature in South China is basically controlled by the summer monsoon, so there are often days when the highest temperature in the west of South China is higher than 30℃ and that in the east of South China is higher than 35℃.

Especially in the low-altitude areas along the Yangtze River, in the year when the summer drought lasted, the "autumn tiger" was felt. In the south of China, autumn always makes people feel late. The reason for the formation of autumn tiger is that the western Pacific subtropical high which controls China in autumn gradually moves southward, but it moves northward. Under the control of this high pressure, it turned cloudy and sunny locally, with strong solar radiation and rising temperature.

The control time of autumn tigers is long and short every year, ranging from half a month to two months. Sometimes the autumn tiger comes and goes, and then goes back. Therefore, it is not certain how long it will be hot after autumn, depending on the performance of the autumn tiger. Mostly at the end of August or early September, it will start to cool down slowly.