Rain is a natural phenomenon in which water droplets fall from clouds to the ground due to gravity. It occurs when air temperature is above freezing and there is sufficient moisture in the atmosphere for condensation to occur, resulting in the formation of cloud droplets. When these droplets combine and become heavy enough, they fall as rain. Rain can be light or heavy, depending on the intensity of precipitation. It plays a vital role in sustaining life on Earth by providing water for plants and animals, replenishing rivers, lakes, and groundwater supplies.