Stop snow in Minecraft?

Hi. I'm currently tinkering with a Minecraft map. On this map, snow should fall permanently, but the snow should not remain there. Does anyone know how to do this with or without WorldEdit (1.12.2 as a mod)?

No snow area

Hmm, maybe you can try strings in the air? I definitely know that they prevent snow from settling, but I don't know if they also block particles, maybe try it out

Then it's not snowing.

You can place Structure Voids on the floor. These are like air, but no snow can form on them.

You will get this block

/ give @s structure_void