Summers used to be much hotter in the US. During the heatwave of 1936, Hancock WI was over 95 degrees on twelve consecutive days. Eight of those days were over 100 degrees, and two were over 110 degrees.
Those eight days over 100 degrees are more than the total number of 100 degree days Hancock has seen in the past sixty years. Hancock has only had three 100 degree days in the past twenty years.
Hancock had forty 100 degree days from 1903 to 1959, and only seven since 1960.