Hi there!
We'd love to use your mod(s) in our pack, but we can't find any info about the licensing of weather2.
We would appreciate additional clarification, as there is no license listed on your github.

According to Curseforge in their knowledge base

"If a mod is on CurseForge you can use it in a pack on the client through the manifest.json. If a mod is on the third party list you can use it by putting it inside overrides/mods. If its not on CurseForge and not on the list, the pack will be rejected."

https://authors.curseforge.com/knowledge-base/game-specific-support/120-how-to-create-a-modpack

You can, unless I'm misunderstanding this, use any mod on Curseforge in a Curseforge modpack. That's the kind that uses the Twitch launcher and soon will use a new launcher from Overwolf. The "All Rights Reserved" on Curseforge applies to the code moreso than the modpack usage, I'd assume.