Based off historical information from this spreadsheet, I would expect that the following companies increase their dividend in May: CLX, LEG, LOW, PEP,STR, ROH. These dividend aristocrats have last increased their dividend payments in May 2007. Upon a closer examination of the dividend growth stock behavior of the 60 dividend aristocrats, it seems that every month there is at least one company that raises its dividend. It’s nice to get a pay raise every month. The only dividend growth stock that has consistently increased its dividend twice in one year since 2003 is STT- State Street.