Percipitation

It didn't really rain today. It precipitated, which is the sort of thing which warrants a probability on the weather forecast but could be anything really. Today it sort of spat a bit, drizzled without enthusiasm then just packed it in and went home.

After all, saying "There'll be a 30% chance of precipitation," is more or less the same as saying "Stuff might happen". Master this sort of vocabulary and there's probably a show for you on ITV4 predicting thingumies and whatsits.