Rain is water that falls from the sky when clouds get too full. The water comes from lakes, rivers, oceans, and even plants. When the sun shines, it warms the water and turns it into vapor, which rises into the air. As the vapor goes higher, it cools down and turns into tiny drops. These drops form clouds. When the clouds hold too many drops, the water falls back down as rain.

Rain gives water to plants, animals, and people. It helps flowers grow and fills rivers and lakes. Sometimes rain is light and soft. Other times it is heavy and loud. Rain is a very important part of nature.