Features

• Beautiful effects - choose between rain, snow, storms, blizzards, and fog to add immersion and depth to your server.
• Day/Night system - create the effect of an entire atmosphere.
• Optimized - designed for use on any-sized server, and for any user.
• Synchronized weather and time - all players see the same type of weather and time of day, no matter if they just joined or have been playing for hours.
• Auto-weather - start and stop weather every so often, based on the addon's configuration.
• Extremely configurable - customize everything from the size of rain droplets to the auto-weather delay.
• Administration commands - control the system through easy-to-use console commands, ULX, or Maestro, depending on what's installed.
• Immersive - from colormod to individual rain droplets onscreen to thunder and lightning to moving the sun around, no expense was spared.
• Versatile - works on any map or gamemode.
• Clientside configuration - players can optimize performance settings for themselves if wanted.
• Addon format - easy to install.
• Workshop support - all the custom content is hosted on the Workshop for fast downloading.

Performance
Tested on my PC - here are the statistics for performance drop per-effect. All effect settings are customizable if you don't get a desired FPS!
No effect: ~120fps
Rain: ~100fps
Snow: ~90fps
Storm: ~70fps

Script filesize: 50kb
Content filesize: 3.9mb

Installation
Copy the SimpleWeather folder to your addons directory. After that, read the readme.

Admin Commands

• sw_weather [type] - Change the weather.
• sw_stopweather - Clear the skies.
• sw_autoweather [0/1] - Toggle auto-weather.
• sw_settime [0-24] - Set the time (0 is midnight, 12 is noon, 15 is 3pm, etc.)
• sw_enabletime [0/1] - Freeze the passage of time.

Chat Commands

• !weatheroptions - Bring up the client configuration menu.