You don’t have to go much farther past Yuma to come up with the big city with the warmest summers. Phoenix tops Las Vegas as the two metropolitan areas with the highest daily mean temperature in the three summer months, with both cities hitting 90 degrees (Phoenix reaches an average of 93 degrees).
How Hot Can It Get? The 10 Hottest Places in the U.S.
With much of the U.S. suffering through a heat wave, a look at the various heat records around the country.
Hottest Average U.S. Summer (Big City Version)
Full List
U.S. Heat