I had been under the mistaken impression that July, 1936 was the hottest month in US history, but the raw temperature data shows that July 1901 was hotter.
The three hottest July’s were 1901, 1936 and 1934
26 Jul 1901 – AMERICAN HEAT WAVE CONTINUES.
It wasn’t just the US.
Climate experts will have to adjust those three years down, due to much smaller urban heat island effect (extreme sarcasm).