The local weather forecast calls for pain increasing over the next five days and tapering off towards the end of the week. Sound familiar? Many people who have arthritis are very familiar this forecast and know that weather effects pain severity. In fact, many people know what the weather is doing just by how a joint feels. Pain, stiffness and swelling can be as accurate at forecasting the weather as a meteorologist. And those who live in certain climates know exactly how painful some climates...