Valentines Day temperatures in the southeast US have declined nearly ten degrees over the past century as CO2 has increased.
The warmest Valentines Day in the US occurred in 1921, which was the second warmest year in the US since 1895 after 1934. The coldest Valentines Day was a century later in 2021.
The percent of days over 60F during 1921 was the highest since 1895.
The heatwave of 1921 extended around the world.
Switzerland’s Lake Morat dried up.
04 Sep 1921, 61 – New York Herald at Newspapers.com
There was a large solar storm on May 15 of that year.
(PDF) The 1859 space weather event revisited: Limits of extreme activity
15 May 1921, 7 – Austin American-Statesman at Newspapers.com
15 May 1921, 1 – Chattanooga Daily Times at Newspapers.com
15 May 1921, 55 – The San Francisco Examiner at Newspapers.com
NASA says 1921 was one of the coldest years on record.
Data.GISS: GISS Surface Temperature Analysis (v4): Analysis Graphs and Plots
