Visualizing how much hotter will it be getting in the USA?
Hot, hotter, hottest! That is the prediction for the 21st century if current trends do not change. Check out the maps at Visualizing Just How Much Hotter Climate Change Will Make Your City.
The most recent heat wave may just be "the tip of the iceberg." The series of maps at the link above illustrate projected temperatures and frequency of hot days.
Here are the actuals to date: