As all things autumnal start to creep into our line of vision—auburn leaves, gourds, (all the) candy—they set a mood. We're moving our raincoats from storage to the coat rack and taking a look at significant art happenings throughout the remainder of the year. Among the shows on this short list you'll find watercolors in magnetizing colors, jawbreaker-glazed stoneware contemplations of everyday surroundings, art history pulled from distinguished collections, and exhibitions that highlight the work.