Features

OS Weather computes local atmospheric conditions for the Overworld on the server and synchronizes player-specific snapshots to clients.

• 47 climate-weighted scenarios and a deterministic simulation core.
• 512-block atmospheric cells with spatial interpolation.
• Active-area updates; the simulation does not force-load Minecraft chunks.
• Persisted atmosphere state restored when the world loads; the simulation does not catch up while the world is offline.
• Weather state for rain, snow, wind, clouds, fog, storms, sandstorms and blizzards.
• Visual/gameplay overrides with priority and explicit release handles.
• Dimension-provider API for addon integrations.
• Live server configuration for operators in the in-game Server tab, applied without restarting.
• API-only mode to disable the built-in simulation while keeping the public API available to addons.

OS Weather is the stable V1 release (1.0). Vanilla /weather clear/rain/thunder is bridged, but compatibility with every other weather or rendering mod is not claimed. See release status.