>>264912665
It's supposedly not too bad, I just haven't bothered with it since I've been mostly doing multiplayer lately. You drop the mod and a few dependencies into the install folder and you're good to go. Night stuff is included as part of the same mod.
https://www.racedepartment.com/downloads/sol.24914/
>>264912792
I don't know if the modded weather effects can compete with that though.