So far, I haven't seen anyone else have this problem, but in my single player worlds, every once in the while it starts randomly snowing inside the Tardis dimension. Entering a different Tardis does not fix the problem, and all of my Tardis are slowly being covered in snow layers, so it's a little annoying to keep cleaning the snow out of them. Using /weather clear does not stop the snow from falling, and disabling the weather cycle also does not work. As I said, I'm not sure if anyone else is having this problem. Any help would be greatly appreciated :D
This was a random bug which occurred with the latest update. I'm not really sure how or why it happened, however I have managed to fix it.
The latest download on Curse should fix the issue