2016 Average Surface Temperatures Warmest Since 1880; 2017 Second Warmest; 16 Of 17 Warmest Years On Record Have Occurred Since 2001
2016 surface temperatures were the warmest since modern record keeping began in 1880, according to independent analyses by NASA and the National Oceanic and Atmospheric Administration (NOAA).
While any individual year has the potential to be an anomaly, NASA and NOAA also note:
Most of the warming occurred in the past 35 years, with 16 of the 17 warmest years on record occurring since 2001. Not only was 2016 the warmest year on record, but eight of the 12 months that make up the year – from January through September, with the exception of June – were the warmest on record for those respective months. October, November, and December of 2016 were the second warmest of those months on record – in all three cases, behind records set in 2015.
The full data set is available here: https://data.giss.nasa.gov/gistemp/
The Copernicus Climate Change Service, the first agency to report on 2017 temperatures, reported that 2017 was the second hottest year on record behind 2016.
On January 18, 2018 NASA also confirmed 2017 to be the second hottest year on record.