Which one is the coolest? (And what’s your favourite?)
In 2017, the global average temperature reached a new all-time high of 1,741.8ºC, which was the warmest for January since the start of the 20th century.
However, that record came during a period of very dry conditions, and it took until February to break the record.
The global average also set a record for the number of days without a single day of above-average temperatures, which is a record since 1951.
This year, we also broke the record for hottest January on record.
Here’s a look at the ten hottest days since the record was set.
The coolest day in history is still January 1, 2017, which set a new global temperature record of 1.6°C, set in September of 1881.
And while the record warmest January was January 1 on the planet, it was only the third warmest ever recorded.
January 1, 2018 was the coldest January since January 1901, when the mercury was -26.6ºC.
This is due to an ice melt in the Arctic, which dropped temperatures by 0.1ºC on the day of the record, making the previous record of -26ºC impossible to reach.
January 3, 2019 was the hottest day of 2018, which has now reached a total of 4.8°C.
The previous record for a warmest February was January 3, 1882, which stood at -20.9ºC and set a world record for snowfall in February, with the previous high being -20ºC in February of 1899.
January 6, 2019 also was the highest temperature recorded in January.
That was also the first February on record with an average temperature above 25ºC for a month.