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File: 30yrNormal_Precip_1901-2000_2480.png

File name: 30yrNormal_Precip_1901-2000_2480.png
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Alternate Text: two rows of small maps showing normal U.S. precipitation during the 10 "Normals" eras of the past century
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two rows of small maps showing normal U.S. precipitation during the 10 "Normals" eras of the past 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.