What can I do for foot arthritus its hard when the weather changes?

Need a diagnosis. We need to be clear about what kind of foot arthritis you have. Treating the underlying diagnosis can help. We see a variety of types of arthritis in the feet: osteoarthritis, rheumatoid arthritis, reactive arthritis, gout to name a few. Treating that can help teh weather changes. This is what we call a "barometer sign" - being affected by weather changes. It is not specific to one type.
Not much... When the weather changes, a low pressure moves in, which makes your body pressure greater than the outer pressure, so you gain a bigger container and hence, gives you inflammation. NSAIDS are about he best you can do as well as time.