Hottest Cities in United States
Two major cities contend for the title of hottest city in the United States. The city that comes out on top depends on how you measure heat.
Phoenix Arizona excels at extreme hot weather. It consistently ranks number one for the most days a year when temperatures rise above 89 °F or 99 °F.
Miami challenges Phoenix for top spot on hottest year-round temperatures. Miami doesn't get regular 100-degree weather. But the southern Florida city stays hot enough all year to run an average mean temperature that's a couple of degrees above Phoenix's.
For annual maximum temperatures, the rankings are flipped. Phoenix's daily high averages out to several degrees above Miami's.
Where the two cities stand closest is on the number of days a year with temperatures of at least 50 °F (10 °C). Miami and Phoenix, along with a few California cities, normally make at least 50 degrees every day.
|City||Days a Year|
Above 99 °F
|Las Vegas, Nevada||70|
|Oklahoma City, Oklahoma||11|
|San Antonio, Texas||8|
|Salt Lake City, Utah||5|
|Kansas City, Missouri||3|
These rankings of hottest cities use long-term temperature averages, based on weather data collected from 1981 to 2010 for the NOAA's National Climatic Data Center.
The major cities included in the weather rankings represent the 51 metropolitan areas in the United States with the most people, all those with over one million residents in 2010, according to the US Census Bureau. A complete list of America's largest urban centers is available here.
|New Orleans, Louisiana||70||21|
|San Antonio, Texas||70||21|
|Las Vegas, Nevada||69||21|
|City||Days a Year Above 49 °F|
|Los Angeles, California||365|
|San Diego, California||365|
|San Jose, California||362|
|San Francisco, California||360|
|San Antonio, Texas||80.3||26.8|
|Las Vegas, Nevada||80.1||26.7|
|New Orleans, Louisiana||78.2||25.7|
|Los Angeles, California||75.2||24.0|
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.