As I've had trouble editing and updating the wiki I've put the weather system tool here:
https://drive.google.com/file/d/1OmLf6M ... M4cHl/view
If you log in with a google account you ought to be able to play with the tool and get an understanding of how it operates.
Edit:
If that link doesn't work try this one:
https://colab.research.google.com/drive ... RjVHEM4cHl
Weather system
Moderator: NWN2 - 10 DM
Weather system
People talk of bestial cruelty, but that's a great injustice and insult to the beasts; a beast can never be so cruel as man, so artistically cruel.