Some climate science from the climate scientists at NOAA:
June 2023 set a record as the warmest June for the globe in NOAA's 174-year record. The June global surface temperature was 1.05°C (1.89°F) above the 20th-century average of 15.5°C (59.9°F). This marked the first time a June temperature exceeded 1°C above the long-term average. The Junes of 2015–2023 rank among the ten warmest Junes on record. June 2023 marked the 47th consecutive June and the 532nd consecutive month with global temperatures, at least nominally, above the 20th-century average.
And of course, there's a chart:
But wait. There's more.
According to this report out of the Imperial College of London:
Heatwaves are amongst the deadliest natural hazards with thousands of people
dying from heat-
related causes each year. However, the full impact of a heatwave is rarely known until weeks
or months afterwards, once death certificates are collected, or scientists can analyse excess
deaths. Many places lack good record-keeping of heat-related deaths, therefore currently
available global mortality figures are likely an underestimate.
In line with what has been expected from past climate projections and IPCC
reports these events
are not rare anymore today. North America, Europe and China have experienced heatwaves
increasingly frequently over the last years as a result of warming caused by human activities,
hence the current heat waves are not rare in today's climate with an event like the currently
expected approximately once every 15 years in the US/Mexico region, once every 10 years in
Southern Europe, and once in 5 years for China.
Without human induced climate change these heat events would however have
rare. In China it would have been about a 1 in 250 year event while maximum heat like in July
2023 would have been virtually impossible to occur in the US/Mexico region and Southern
Europe if humans had not warmed the planet by burning fossil fuels.
In all the regions a heatwave of the same likelihood as the one observed
today would have been
significantly cooler in a world without climate change. Similar to previous studies we found
that the heatwaves defined above are 2.5°C warmer in Southern Europe, 2°C warmer in North
America and about 1°C in China in today’s climate than they would have been if it was not for
human-induced climate change.