In this video, you will learn how to control the Weather! Controlling weather in Twinmotion is easy with two convenient sliders (1 for the weather itself and 1 for the season) These settings can be set for image renderings or even videos. Twinmotion’s weather is so awesome in that there is actual rain and snow that can be applied automatically to the scene based on your settings. This and all the weather settings are covered in this video.
https://dev.epicgames.com/community/learning/tutorials/0GGy/how-to-control-weather-twinmotion-2020