
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.
(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.