This dataset consist Twenty years’ of annual rainfall data, obtained from three metrological stations. These annual rainfal were subjected to nine different probability plotting position methods, which are California, Weibull, Hazen, Adamowski, Blom, Chegodagev, Gringoten, Hirsh, and Laplace methods. The respective months and years of the rainfall was recorded. The months are recoded into halves of the year, 1 represent months in first half and 2 represents months in second year.