I find that big temperature swings bother me. From 90 degrees to 107 seems to be a big swing to me.

Are you keeping a pain diary? I've found that if I check the days that I have the most pain they correlate with the swings in the barometric pressure. I was recording the days I felt the worst and then went back and googled the barometric pressure on those days for my area. They seem to correlate. It would be interesting to see the temps on the days you feel the worst too.