This map shows the percentage of annual precipitation that occurs during the indicated 3-month season, based upon climatological precipitation using the 1991-2020 base period from the monthly CPC Merged Analysis of Precipitation (CMAP) dataset.
Regions shaded in green receive more than 30% of their annual precipitation, while areas shaded in brown receive less than 20% of their annual precipitation during the indicated 3-month season. Light blue represents fractions of annual precipitation between 20% to 30%. Contours are drawn at intervals of 10%. Masked areas in white indicate regions that receive less than 25 mm of precipitation during the 3-month season shown. The tool allows the selection of any of the 12 overlapping 3-month seasons during the year.
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