What is the basic idea of "seeing the weather from the clouds"?

The article first talks about the relationship between different forms of clouds and weather.

Paragraph 1 is an overview with a unique language. Always said, "The clouds in the sky are really changeable."

Next, the author uses metaphor and parallelism to describe the myriad poses of the cloud very vividly, which can stimulate readers' imagination.

The following four paragraphs specifically introduce the relationship between cloud morphology and weather.

The second paragraph is the outline of the next three paragraphs: thin clouds are often a symbol of sunny weather; Low and thick clouds are often a sign of rain and snow.

This is the main idea of the article.