Global climate trend since Dec. 1 1978: +0.14 C per decade
Global climate trend since Dec. 1 1978: +0.14 C per decade (New Reference Base, 1991-2020) Northern Hemisphere: +0.14 C (+0.25 °F) above seasonal average Southern Hemisphere: +0.03 C (+0.05 °F) above seasonal average Tropics: +0.06 C (+0.11 °F) above seasonal average Northern Hemisphere: +0.05 C (+0.09 °F) above seasonal average Southern Hemisphere: -0.15 C (-0.27 °F) below seasonal average Tropics: -0.28 C (-0.50 °F) below seasonal average Notes on data released June 2, 2021 (v6.0, with new reference base) With the modest warming seen in May, we are likely on the way out of th...