Warmest June on Record
The global surface land temperature this past June was the warmest of the last 131 years, according to a NOAA global climate analysis; the previous record was set in 2005. Combined land and ocean temperatures for June were 0.68°C (1.22°F) warmer than average June temperatures for the 20th century.
2010 is setting many temperature records, with the last four months each ranking as the warmest March, April, May, and June months ever measured for the globe and the Northern Hemisphere.
Regionally, June temperatures were especially high the eastern United States. The Southwest showed less warming, and the Pacific Northwest had cooler than average temperatures. See figure of global temperature anomalies here.
These record-breaking global temperatures are occurring during a time of reduced solar irradiance, adding to the large mountain of evidence that recent warmth is a result of human greenhouse gas emissions, cites Joe Romm from a recent NASA report.