The Climate Prediction Center's (CPC) rainfall data for the world (1979 to present, 50 km resolution) and the USA (1948 to present, 25 km resolution), is one of the few high quality, long term, observation based, daily rainfall products available for free. Although raw data is available at CPC's ftp site, obtaining, processing and visualizing the data is not straightforward. There are thousands of files, and file formats and file extensions have been changing over time. This package provides functionality to download, process and visualize over 40 years of global rainfall data and over 70 years of USA rainfall data from CPC.