As things currently are, Weather 2 is only partially compatible; capable of causing snow buildup inside blocks only if a snow layer was already present beforehand and incapable of spawning a snow tile inside a clean block.
I believe Weather 2 would greatly benefit from being made fully compatible with that mod, and preferably in all versions it's intended to be released for.
Suggestion Snow Real Magic is a 1.12.2 and beyond mod which, among other things, allows snow to build up inside fences and other non-solid blocks.
https://www.curseforge.com/minecraft/mc-mods/snow-real-magic
As things currently are, Weather 2 is only partially compatible; capable of causing snow buildup inside blocks only if a snow layer was already present beforehand and incapable of spawning a snow tile inside a clean block. I believe Weather 2 would greatly benefit from being made fully compatible with that mod, and preferably in all versions it's intended to be released for.