I got the new M0 plat from fastlane that he just made and i realized that it has wipers(plus with that i love rain) So please tell me if there is any because im interested(btw the mods fire check it out)
You don't need a mod for that. You can add rain to any map using the world editor (F11). Most official maps already have a rain emitter which just has to be enabled. You should be able to find it by searching for "rain" in the scene tree window. This thread may be helpful. If there isn't such an emitter, you can add one. Click on create object in the bar on the top. Choose precipitation and add it to the map by clicking on the ground. You can edit the amount of rain drops in the inspector window. You can also change the particle from rain to snow. There is a problem with the rain though: it goes through your windshield, as it has no collision.
You should check out "Hirochi Rainway" (it's on the repo), and also "Shuto Expressway" (on the forums) which features various weather modes including thunderstorms.