More and more condensation process will occur and more water droplets will be collected.
And the cloud will get heavier.
And by the will of Allah, it rains or snows.
Al Aaraf 7: 57
And it is He Who sends the winds as heralds of glad tidings, going before His Mercy (rain). Till when they have carried a heavy-laden cloud, We drive it to a land that is dead, then We cause water (rain) to descend thereon. Then We produce every kind of fruit therewith. Similarly, We shall raise up the dead, so that you may remember or take heed.
Do you notice that rain come down in drops and does not fall like waterfall would? If rain comes down like waterfall, it will damage lots o things.
Ar Rum 30:48
Allâh is He Who sends the winds, so they raise clouds, and spread them along the sky as He wills, and then break them into fragments, until you see rain drops come forth from their midst! Then when He has made them fall on whom of His slaves as He wills, lo! they rejoice!
Praises to Allah for all His blessings.