39_ Written by Dan Cropper on October 8, 2021. Contiguous U.S. ranked fifth warmest during 2020; Alaska experienced its coldest year since 2012. NOAA Natl. Centers Environ. Inf. 2021; published online Jan 8. https://www.ncei.noaa.gov/news/national-climate-202012 (accessed Sept 6, 2021). Previous Next