I've long noticed this weather thing, I'm sorry for all of you who go through it.
It's my belief, that so long as the barometer is 'moving' downward, this makes the pain worse. So, correlate that to 'feeling the storm coming'... As opposed to starting to feel better, sometimes even before the sun comes out again. (that's the barometer back on the rise).

I've been in agony this past month (eastern Pa), and also notice that the humidity has a bit to do with it. When I first got rsd, it was the cold, then the humidity and the barometer. I think I concentrated too much on the cold. Now, Spring (the rainy part) is the worst time of year for me. Although there aren't lots of bright sunshiny days.

For relief, I find that Aleve (for myself, it's My personal NSAID of choice) is more effective than methadone alone. This weather stuff seems to be inflammation. So, I suggest that you don't' write off a simple NSAID, just because you already took the strong stuff. It's a wonderful adjunct for these kind of days.

Feel Well!

Pete
asb