PMWeatherCM1
by odvigajlo
Players who want realistic storms can add PMWeatherCM1 to ProtoManly's Weather, a NeoForge addon that brings physically simulated storms and atmospheric phenomena to 1.21.1.
What it does
PMWeatherCM1 is an addon for ProtoManly's Weather, which must be installed alongside it. Storms it adds are physically simulated, with full charge separation driving lightning activity, and the sky follows a physically accurate atmosphere model. Atmospheric phenomena beyond standard rain and thunder are included, aimed at players who want weather that behaves like its real-world counterpart rather than a visual overlay.
The addon is built for NeoForge and works on 1.21.1 only. Storms appear naturally during play, and the pmweather spawn scenario can be used to trigger a storm on demand. The author recommends at least 4GB of RAM allocated in the launcher to avoid out-of-memory errors. Because the simulation is demanding, a GPU around the RTX 3060 class is advised for comfortable performance, and weaker cards may need higher downsampling.
Every player and the server need a copy of the mod. The mod is released under All rights reserved and is not open source. Its first file was published on 2026-06-22, and version 1.1.5 for 1.21.1 followed on 2026-10-06 in the beta channel. The author notes that LAN multiplayer is untested and unstable, and that compatibility with other mods is not promised.
Key features
Physically simulated storms
Storm systems follow a physical simulation rather than scripted weather patterns, giving turbulent and large-scale clouds.
Charge separation lightning
Full charge separation is simulated, so lightning activity results from the modeled storm instead of a fixed chance.
Physically accurate sky
The sky and atmosphere are rendered with a physically accurate model that changes with the simulated weather.
Atmospheric phenomena
Atmospheric phenomena are included, extending the weather beyond standard rain and thunder.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
R1's radar and camera additions for ProtoManly's Weather is a client and server NeoForge addon for 1.21.1 under All rights reserved, and it adds radar and camera views rather than storm physics. PMExpansion is a client-side only NeoForge mod for 1.21.1, so servers run without it. PMTemperature is a server-side only mod for 1.21.1 released under the MIT License and is open source, while Wildfire Additions for ProtoManly's Weather is an open source addon under the MIT License for client and server on 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| PMWeatherCM1 | NeoForge | 1.21.1 | Client and server | 2026-10-06 |
| R1's radar and camera additions for ProtoManly's Weather | NeoForge | 1.21.1 | Client and server | 2026-06-26 |
| PMExpansion | NeoForge | 1.21.1 | Client-side only | 2026-02-17 |
| PMTemperature | NeoForge | 1.21.1 | Server-side only | 2025-08-09 |
| Wildfire Additions for ProtoManly's Weather | NeoForge | 1.21.1 | Client and server | 2026-08-03 |
Questions
Does PMWeatherCM1 need ProtoManly's Weather?
Does the server need PMWeatherCM1?
Is LAN multiplayer supported?
In the catalog
PMWeatherCM1 is one of 12,078 Decoration mods on ModsFinder, and one of 5,201 Decoration mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
Physically simulated weather in Minecraft, beautiful, huge, turbulent, realistic All storms (scenarios) are physically simulated, and accurate to real life
Official listing
- Modrinth page
- modrinth.com/mod/pmweathercm1
- Owner
- odvigajlo
- Published
- 2026-06-22
- Updated on Modrinth
- 2026-10-06
- Facts verified
- 2026-10-15