Preliminary data from the National Oceanic and Atmospheric Administration show that June’s global temperatures were the fourth hottest since record-keeping began in 1880.
That makes three months in a row — April, May and June — in which record-high monthly land temperature records were set, according to the NOAA data.
It was the second-warmest June in the Northern Hemisphere, behind only the record warmth of 2010.
Most areas experienced much higher-than-average monthly temperatures, including most of North America and Eurasia, and northern Africa. Only northern and western Europe, and the northwestern United States were notably cooler than average.
The globally averaged land surface temperature for June 2012 was also the all-time warmest June on record, at 1.93 F above average.
The combined global land and ocean average surface temperature for January-June 2012 was the 11th warmest on record at 0.94 F above the 20th century average.
The greatest January-June warmth was observed over most of North America, southern Greenland and most of Russia. The first half of 2012 was notably cooler than average across Alaska, Mongolia, and Australia.