My pain events are almost always caused by weather changes. I STILL can't figure out well enough to predict, but I know Winter and Spring can be hell on me here in the Southeastern US. I Know when isobars are close together it's bad and Low's are not good - if they're moving north to south? Humidity changes, temperature changes, wind... it varies.
It's the 'changing' that hurts. Once the weather gets here, the pain has subsided.
Anne