All the data points to one conclusion: 2018 was hotter than every single year between 1880 and 2014; only the three prior years were warmer than last year.
According to NOAA, 2018 was Arizona's second warmest year ever recorded, one of a dozen states with similarly high temperature averages. It predicted that global temperatures will continue to rise over the next five years, with a 10% chance that we'll breach the mark of 1.5 °C above preindustrial levels.
"You get ups and downs - years that are a little bit warmer, a little bit cooler - but the long-term underlying trend is very, very clear", said NASA climatologist Gavin Schmidt, who worked on the space agency's analysis.
NASA's temperature analyses incorporate surface temperature measurements from 6,300 weather stations, ship- and buoy-based observations of sea surface temperatures, and temperature measurements from Antarctic research stations. Scientists have linked climate change to more destructive hurricanes like Michael and Florence a year ago, and have found links to such phenomena as the polar vortex, which last week delivered bone-chilling blasts to the American Midwest and Northeast.
NASA and NOAA added that increasing temperatures can also contribute to longer fire seasons and some extreme weather events.
The past five years are the warmest years in modern record.
The data indicate that global warming shows no sign of stopping.
Using computer simulations, the British weather office forecast s that the next five years will average somewhere between 58.51 and 59.49 degrees (14.73 to 15.27 Celsius). The global surface temperature was almost 1 degree Celsius higher than average and it is because of global warming.
This also means Toronto's temperature rose above the global average.
"People place way too much emphasis on a single year, usually to re-enforce a story, or a narrative, they have in their mind, already", he said.
"The planet is warming". Right behind Michael were the western USA wildfires and Hurricane Florence, which both racked up $24 billion in damages, according to NOAA.