Repeat: The average temperature for June, July and August has soared 6.8 degrees over the last three decades, 2.2 degrees higher than second-place Boise and 2.4 degrees above third-place Las Vegas.
The average temperature for June, July and August has soared 6.8 degrees over the last three decades, 2.2 degrees higher than second-place Boise and 2.4 degrees above third-place Las Vegas.