Why is it always wet before it rains?

First, let's talk about how rain is formed. This is because the water droplets are too big for the clouds to bear, so they fall under the action of gravity.

Before the rain, the water vapor in the air was accumulating, but it had not reached the level of qualitative change, so the air humidity was particularly high. We will feel wet.

I think so, too. I'm just a liberal arts student in my freshman year. Wrong. Don't laugh!