This is a pack of simple weather particle effects that are quite optimized, look great, and are effected by wind zones in realistic ways. They collide with any collider in the scene, and react accordingly. For example, rain splashes, hail bounces, snow settles, and dust... well it kind of floats there looking somewhat grumpy and being jealous of the other particles.
If you want the weather to seem to cover the entire scene, simply parent the prefab you want to your main camera.
Included Effects:
Dust
Hail
Rain
Snow
Flurries!