On May 22, 1911 it was 101 degrees at Lewiston, Maine, 100 degrees at Farmington, Maine and 102 degrees at Purcellville, Virginia.
The heatwave caused hundreds of deaths.
22 May 1911, Page 1 – The Sydney Morning Herald at Newspapers.com
The average maximum temperature in the Northeast that day was 91 degrees. May 22 temperatures have been declining in the Northeast since the 19th century.