Download 2d Weather Effects Free Unity. 

Documentation is HERE
Standard RP Sprite Support
URP Sprite Support (new 2d light system and 2d renderer data)
LWRP Post Effect Support (sprite will NOT be supported for LWRP)

Full package also including this shader is HERE:
Standard Shaders

Full screen image effects and sprite support for your 2d games.

You can add mist, fog, storm, sand-storm, smoke, snow, rain effects to your 2d games very easily.