One year ago this week, President Barack Obama waited for a hot day in Washington and hurriedly held an outdoor speech, where he could perspire, engage in third rate acting, and blame global warming.
The president might be surprised to learn that temperatures are normally hot in the summer. The graph below shows the annual percentage of US June temperatures above 100 degrees through the 21st of the month.
Prior to 1954, 100 degree June days were much more common, and this June has been below the 1895-2014 mean.
For the entire summer, the frequency of 100 degree days has dropped dramatically since the 1930s.