Why constant? Why not make it intermittent/random? Or maybe only when the music track "The Search For Iron" plays? That track makes me think of rain falling, and it's why I searched for a mod that adds rain to the game.

I originally planned to update this mod to make the weather effects dynamic and add other weather patterns such as lightning. Unfortunately, I ran into some unavoidable limitations with the Factorio API specifically, the PlanetPrototype.player_effects property can't be changed at runtime. That basically put a stop to any updates to this mod, although I'm sure there is still some incredibly convoluted way to work around this, I just haven't put any time into figuring it out.

If someone ever figures out a way to make a rain mod for Nauvis that isn't constant rain (like Gleba, where I wish the rain would occasionally stop), I'll give that mod a try. Thank you for the reply, though. I didn't check my notifications until now.