Last December was the second-warmest December in the 139 years that records have been kept.
On Wednesday it incorporated the final weeks of a year ago into its climate models and concluded that average global surface temperature in 2018 was 1 degree Celsius (1.8 Fahrenheit) above pre-industrial baseline levels.
Since the 1880s, the average global surface temperature has risen about one degree Celsius.
If you spent much time outside last summer and thought that it wasn't that hot in past years, you were right.
Along with this, Nasa and the National Oceanic and Atmospheric Administration have also released new figures for global warming.
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She also said that the move to use her image to promote the competition for curvaceous women was deliberate and meant to hurt her brand.
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The statement continued: "Having disagreements is one thing, but manipulating the relationship for electoral aims is another". Griveaux said that the visit violated "the most elementary diplomacy" because it was unannounced.
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This was a season marked by in-fighting among the Steelers, something that has tainted the fans' perception of the team.
A year ago also saw the melting of what is believed to be some of the oldest ice in the Arctic, north of Greenland - which scientists believed would be the "last bastion" to be melted by climate change.
The hottest year on record was 2016 when the average global surface temperature was 0.99 degrees Celsius or 1.78 degrees Fahrenheit higher than the mid-20th century mean. NOAA found the average mean temperatures for the contiguous USA was the 14th-warmest on record. "It's because of the increases of greenhouse gases". These calculations produce the global average temperature deviations from the baseline period of 1951 to 1980.
This year has also started with scorching temperatures, including Australia's warmest January on record, while North America had the complete opposite, experiencing a polar vortex that plunged parts of America into temperatures colder than that of Antarctica's.
Yet Trump has dismissed the threat of climate change, including a landmark assessment by 13 federal agencies last fall that found climate change is inflicting increasing damage to the nation's environment, health and economy.
Despite global efforts, planet-warming emissions are trending upward.
NASA and NOAA climate scientists said even though 2018 was a tad cooler than the three previous years that's mostly due to random weather variations. One reason, they said, is a persistent appetite for oil - including unexpected growth in the United States and Europe, where experts thought its use had already peaked.