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File: 30-yrNormal_Precip_1901-2000_2480.png

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Alternate Text: 10 small U.S. maps showing precipitation normals since the start of the 19th century
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10 small U.S. maps showing precipitation normals since the start of the 19th century

Image caption

Normal annual U.S. precipitation as a percent of the 20th-century average for each U.S. Climate Normals period from 1901-1930 (upper left) to 1991-2020 (lower right). Places where the normal annual precipitation was 12.5 percent or more below the 20th-century average are darkest brown; places where normal annual precipitation was 12.5 percent or more wetter than the 20th-century average are darkest green. Maps by NOAA Climate.gov, based on analysis by Jared Rennie, North Carolina Institute for Climate Studies/NCEI. Individual maps are available in a zip file.