How Does Heat Affect Rainfall?

As average temperatures at the Earth's surface rise, more evaporation occurs, which, in turn, increases overall precipitation. ... In addition, higher temperatures lead to more evaporation, so increased precipitation will not necessarily increase the amount of water available for drinking, irrigation, and industry.

Does heat cause rain?

When the cloud can grow no more, it starts to rain. Extremely high rainfall rates (higher when there is more heat and humidity) bring down cool air from the sky. That heavier cool air starts to crush and cut off the warm updraft which leaves the cloud no longer able to grow. It rains itself out!

Does it rain more when it's hot?

Warm air can hold more moisture than cool air. When the warmer air is cooled and the moisture condenses, it often rains more heavily.