Artyom Ilyin

Simple easy-to-use and easy-to-set-up lightweight plugin for snowfall effect on your site. If you have any questions or inqueries, please feel free to get in touch via email kupnoh25@gmail.com.
Snowfall plugin uses snowfall library to set up snow effect. For more info about the library go to https://github.com/KupnoH/snowfall. 
Plugin is very easy to install and use. 
Though some coding needed to set this plugin up it’s very easy and Installation section explains it in details. 
You can find this plugin on github <a href="https://github.com/KupnoH/snowfall-wp" rel="nofollow ugc">here</a>

Snowfall

Simple easy-to-use and easy-to-set-up lightweight plugin for snowfall effect on your site.

vanMeerdervoort

This plugin creates an awesome 3D snow effect on the background of your WordPress website. It’s based on the wonderful jQuery scripts by <a href="http://maran-emil.de/experiments/demo3/" rel="nofollow ugc">Emil Maran</a>

3D Snow

Add an Awesome 3D snow effect to your WordPress website! Just install and activate to make it snow!

Snowfall vs 3D Snow