Best Advanced Rain System - Roblox Guide

: Using raycasting to ensure rain doesn't fall through solid parts or roofs.

: A specialized script for developers who need maximum optimization. It uses multithreading to handle individual raindrop raycasts with almost zero frame drops. Best Advanced Rain System - Roblox

: Automatically muffling rain sounds when the player steps indoors or under cover. : Using raycasting to ensure rain doesn't fall

To be considered "advanced," a rain system must handle more than just falling particles: Best Advanced Rain System - Roblox

: Running the effects on the client rather than the server to prevent lag and ensure smooth visual "tweening".