(Also called climagram, climagraph, climatogram, climatograph, climogram, climograph.) A graph that represents climatological information.
Usually two or more climatic elements are plotted to show the changes in their relationship throughout the year. Often the climatic elements are plotted on the ordinate axis and time (usually month) plotted on the abscissa. Alternatively, the 12 monthly values of one climatic element are plotted on the ordinate versus the corresponding monthly values of another climatic element plotted on the abscissa, and the resulting points are connected with a continuous line.
Source: American Meteorological Society