I painted my car's second coat and it started drizzling immediatly after. I lightly blotted out the drops that hit my car. They beaded up on the surface and just sat there. There were light showers on and off but nothing that really drowned my car for about 5-7 hours. I went back and put my car together and the paint was still a little soft in places but good enough to not worry about it. Over night it poured out. My paint was fine. So dont worry.. just go for it. And remember water and oil dont mix well... the water will just bead up.
-serpent