WeatherCore

WeatherCore

Library mod for registering custom weather conditions

by
101 Downloads
neoforgegame-mechanicslibrary
Rent Server with this Mod

About this Mod

WeatherCore

WeatherCore is an intrusive core library mod that overhauls Minecraft's hardcoded weather system, replacing it with a flexible weather system with the possibility of registering new weather types.

For users

Installed alone, this mod doesn't alter vanilla weather, but might alter the way Minecraft choose its next weather due to replacing the hardcoded weather timers with a complex weather management system.

Only install WeatherCore if a dependency requires it.

Key Features

  • Custom weather registry: Register custom weather conditions.
  • Weather management: Replaces vanilla's basic timers with a management system.
  • Scoping: A scope defines the zones a weather condition affects inside a level. Weather themselves are not "aware" of what scopes they own so any custom weather conditions can be summoned globally or centered.
  • Replaces /weather command and adds a /toggledownfall command.

Weather scopes

Any custom weather condition created with this library will own a scope when summoned. It can either be:

  • Global Scope (dimension wide)
    • Perfect for vanilla style weathers
    • Affects the entire dimension
  • Centered
    • Ideal for events, like a fallout after a nuclear explosion or a cursed fog after activating a mysterious monolith.
    • Good for letting players decorate their builds
    • Maybe good for tornadoes? Why not use entities instead?

Development

WeatherCore is currently under active development and is mostly bespoke to my own projects. I am looking for feedback from other developers to make the mod more universally useful and ensure it integrates smoothly with other mods.

If you want to use WeatherCore, use the artifact from Modrinth's maven:

repositories {
    maven {
        name = "Modrinth"
        url = "https://api.modrinth.com/maven"
    }
}

dependencies {
    modImplementation "maven.modrinth:weathercore:mc1.21.1-0.1.0"
}

Credits

The icon of WeatherCore and Weather Extended is made by anyputer

Available Versions

0.1.2beta
MC 1.21.1neoforge
June 9, 2026
0.1.1beta
MC 1.21.1neoforge
June 3, 2026
0.1.0beta
MC 1.21.1neoforge
May 30, 2026

How to Install WeatherCore on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "WeatherCore". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

WeatherCore server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is WeatherCore compatible with neoforge?

WeatherCore officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with WeatherCore – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if WeatherCore consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install WeatherCore with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.1