The three hottest July 24’s in the US occurred in 1901, 1934 and 1940.
Scientists blamed the 1901 heat on the sun.
24 Jul 1901, Page 1 – The Capital Journal at Newspapers.com
24 Jul 1901, 2 – The Weekly Sentinel at Newspapers.com
24 Jul 1901, 1 – Davenport Weekly Republican at Newspapers.com
