July was hottest month on record, U.S. climate scientists say

WASHINGTON, D.C. — July was the warmest month in the 140 years that the National Oceanic and Atmospheric Administration has kept a global temperature dataset, the U.S. government agency said Thursday.

The July average temperature across global land and ocean surfaces was 16.75 degrees Celsius (62.15 Fahrenheit), which was 0.95 Celsius (or 1.71 Fahrenheit) above the 20th-century average of 15.8 Celsius (60.44 Fahrenheit) and was the highest since NOAA’s record-keeping began in 1880.

The most notable warm temperature departures from average occurred in Alaska, Central Europe, northern and southwestern parts of Asia and parts of Africa and Australia, according to NOAA. Temperatures in these regions in July were about 2 degrees Celsius (35.6 Fahrenheit) above the 1981-2010 average or higher.

The data also shows that 9 of the 10 warmest Julys have occurred since 2005, with the last five being the five warmest Julys on record. July 1998 was the only July in the previous century among the 10 warmest on record.

Global average land surface temperature was 15.53 degrees Celsius (59.95 Fahrenheit), which was 1.23 Celsius (2.21 Fahrenheit) above the 20th-century average of 14.3 Celsius (57.74 Fahrenheit) and the second-highest July land temperature in the 140-year record.

NOAA also said the year-to-date temperature for 2019 tied with 2017 as the second warmest January-July on record.

The data was compiled by NOAA’s National Centers for Environmental Information, which provides several climate services to the government, businesses, academia and the public to support informed decision-making.

The data is consistent with assessments already released by the United Nations’ meteorological organization.