Climograph

http://en.wikipedia.org/wiki/File:CalcuttaMetric.png

Climographs are representations of temperature and precipation observations based upon different times of the year in different areas of the world. They are typically done month by month and used for quick, standardized reports of the climate for specific regions. The red line that is shown near the top of the graph is used to represent the temperature of those months and the green bars are for the precipitation. These maps are great at showing when the hottest and most frequent precipiation amounts are within the year. In addition this map is showing these values for Savannah, Georgia so one can observe that July and August are the hottest months and May receives the heaviest amounts of rainfall and precipitation.