Prairie du Chien, Wisconsin has had 191 days over one hundred degrees since 1900. None of them occurred between 2000 and 2011.
The hottest day was July 22, 1901, when the temperature reached 110F – during a streak of eight consecutive days over 100F.
The 1930s had fifty eight days over 100 degrees, compared to zero days between 2000 and 2011. (Weather Underground reports two days over 100 degrees in July, 2012, but they aren’t official temperatures.)
James Hansen says heatwaves are getting worse in the US due to CO2.
You have not let Hansen adjust that chart. That is not fair!