Its simple reason is that when the amount of clouds is too much or heavy in the sky, during the rain, there is a piece of ice or snow particles from the sky, which is known as my ice cubes or rains, and I say the rain which we call, but a large cloud particle from the sky. If the clouds in the sky become too heavy to accumulate in the sky, then if the clouds lose the ability to hold the sky, the particles of the clouds from the sky fall apart from the earth. When the particles of the clouds are frozen with each other, the particles are so small that we can see the rain in the earth. When the particles of the clouds fall from the sky in much greater form then due to the over-friction with each other, The particles can not be crushed or fall into the ground before it happens. And this is why rain falls in the sky during the rain
