
Image caption
(top) Surface temperature in May 2021 compared to the 1981-2010 average. (bottom) May temperatures compared to the 20th-century average each year from 1880 to 2021. NOAA Climate.gov image, based on NCEI data.
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(top) Surface temperature in May 2021 compared to the 1981-2010 average. (bottom) May temperatures compared to the 20th-century average each year from 1880 to 2021. NOAA Climate.gov image, based on NCEI data.