Seeing as frontier are based in the UK where rides do not close in adverse weather only for lightening I doubt they will implement it. It would also be a pain to program and I'm not sure it would add much to the game.
How did you come up with that? Have you been to Blackpool Pleasure Beach, miserable day there and most things are closed, not just lightening.
I went to Lightwater Valley once, It wasn't even that wet and the main wooden coaster was shut. That's all I really wanted to go on [down]