I have had one precognitive dream in my life, about a trivial but extremely unlikely matter (the arrival of my older brother, dressed as an airline pilot, at an airport, through a glass tube, which came to pass a couple days later).

It’s just enough for me to say “something definitely weird is going on.” But in retrospect, it’s so trivial (this happened 30 years ago and nothing special came out of it) and so rare, that if it’s real I suspect it’s a phenomenon correlated with solar wind and radon gas exposure while sleeping with a magnet.