Boosted by a historic heat wave in Europe and unusually warm conditions across the Arctic and Eurasia, the average temperature of the planet soared to its highest level ever recorded in June.

According to data released Monday by NASA, the global average temperature was 1.7 degrees Fahrenheit (0.93 Celsius) above the June norm (based on a 1951-to-1980 baseline), easily breaking the previous June record of 1.5 degrees Fahrenheit (0.82 Celsius), set in 2016, above the average.

The month was punctuated by a severe heat wave that struck Western Europe in particular during the last week, with numerous all-time-hottest-temperature records falling in countries with centuries-old data sets.