Hello, I'm new to modding WoW, and despite looking about it for quite a bit, I couldn't find the solution to my problem, so I'm down to ask :x

I'm trying to disable the weather effects entirely (not just reduce their intensity) for a 1.12.1 client. From what I understand, the server sends to the client "the weather changes to X" and the client displays it. So I wanted to mod the relevant file so that whatever the server sends, the weather displayed would be "fine".
 
Problem is, I have no idea (and couldn't find) in which file is the weather.
Weather.dbc only exists since WotLK, so I can't use it. I've looked at the AreaTable.dbc of both dbc.MPQ and Patch.MPQ and nothing seems to be related to the weather.

I'm at my wits' end here.
If someone already has a file disabling weather, I'd be very grateful. If not, a pointed to where I could find the file responsible for managing the weather would be very appreciated.

Thanks.