While I'm working on a longer post, here is an interesting interactive graphic from Climate Central. Just type in the city you are interested in and see what the summers will be for that city in AD 2100. It shows which US city (or world city) currently experiences average summer temperatures as hot as those predicted for selected US cities and gives you an idea of how far north the climate bands will have shifted over the next 86 years.
Average summer highs in my current hometown are predicted to warm up by nearly 6.5ºC from the current average high of 29.4ºC to a predicted average high of 35.9ºC. How much will your closest city warm?