If you've ever read "The Mayor of Casterbridge", you may recall "Wide-O", the conjuror (quack weather forecaster). Well, here's the modern-day equivalent:
Ireland and UK weather - Predict Weather - the home of long range weather
But notice how uncannily accurate he was about this summer. And IME the weather *is* always worse at full moons, which is another of his theories - look how many wet FNRttCs there are, and how it nearly always rains at some point on the Dun Run.
He is a climate change denier, but try and look past that.