For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Snow VFX for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Snow VFX v3.1 (Latest version)
Realistic Snow VFX v2.1
“If possible, please buy the package to support the developer”
A collection of realistic looking snow particle systems, simple, and easy to drop in to a scene.
There are multiple strengths of snow. Systems include variations of snowflakes so all don’t look the same.
Package includes:
Ultra-fine
Soft light
Medium
Heavy snow storm
Cinematic blizzard
Each system also includes variations for external forces so the snow can be affect by wind zones already in your game and an option without ground laying effects.
NOTE: Includes my Particle Scaler Utility
Take a look at my Rain Pack and free Hail Pack too!