The Quran stressing on the link between winds and clouds: rain

[Angrboda]

So, people were not capable of drawing a connection between clouds and rain before the Koran?

*Winds and clouds. The verse stressed on that. Winds were pinpointed as the cause of clouds to rise up. People in the past didn't know that as far as I know.

It doesn't say anything about causing them to "rise up." It says the winds stir the clouds and spreads them in the sky. You don't think people could have figured that out based on observation? Pull your head out.