Rain & Other Environmental Mods.

[USA Trucker]

To be on the safe side I would, but you can try it. If it doesn’t disturb your saved games, than your fine.

This is a common complaint, as is with the opposite. I didn’t see my first raindrop for a few gaming months. It goes both ways. It’s just a design flaw. You could see rain for days while the sun is shining.