Why is the weather forecast always inaccurate?

Weather forecast belongs to forecasting science. According to the laws of science, forecasting science cannot be completely accurate or always accurate. The current level of science and technology, especially the understanding of the whole atmosphere and even the whole climate system, determines that our weather forecast cannot be completely accurate, and there must be some contingency.

Humans have not fully grasped the laws of atmospheric motion.

There is a certain uncertainty in every link of atmospheric movement, so it is impossible for every forecast result to be consistent with reality. It is precisely because of the ever-changing atmosphere that human beings have not fully understood and mastered the laws of atmospheric movement.

With the development of science and technology and the progress of human understanding, the accuracy of weather diagnosis and forecast is getting more and more accurate, but it can never be completely accurate. Just like a doctor seeing a doctor, it used to be diagnosed by taking the pulse, but now technology is developed. With scientific and technological instruments such as CT and B-ultrasound, the accuracy has been greatly improved, but there will still be inaccuracies.