Temperatures across the country are expected to be exceptionally high this weekend, with record highs potentially being set in the Northeast. The National Weather Service has issued excessive heat warnings for many areas — particularly the Plains, Midwest and much of the East — where temperatures are expected to range from 90 to 100 degrees.
While warm and even hot weather can be enjoyable, extreme heat puts many — especially infants, young children, and the elderly — at risk of heat-related illnesses. The frequency of heat-related health issues, such as heat stroke and exhaustion, is directly related to how high temperatures are and the level of humidity. According to the Department of Homeland Security, extreme heat often results in a greater number of annual deaths than any other weather-related hazard.
24/7 Wall St. has identified the country’s 50 hottest cities based on the average number of 90-plus degree days per year using climate data from the National Oceanic Atmospheric Administration.
There are 50 large cities with populations of at least 10,000 where the temperature reaches at least 90 degrees Fahrenheit for more than 67 days in an average year.
Click here to see the 50 hottest cities in America.
Click here to see our detailed findings and methodology.
Source: littleny / Getty Images
50. Miami, FL
> Days per year with 90 F+ temp.: 68
> Highest temp. on record (1948-2018): 98.0 F
> Normal mid-summer high: 91.0 F
> Normal year-round high: 84.3 F
Source: RoschetzkyIstockPhoto / Getty Images
49. Amarillo, TX
> Days per year with 90 F+ temp.: 68
> Highest temp. on record (1947-2018): 111.0 F
> Normal mid-summer high: 91.4 F
> Normal year-round high: 70.9 F
Source: Public Domain / Wikimedia Commons
48. Memphis, TN
> Days per year with 90 F+ temp.: 68
> Highest temp. on record (1940-2018): 108.0 F
> Normal mid-summer high: 91.6 F
> Normal year-round high: 72.4 F
Source: DenisTangneyJr / Getty Images
47. Tupelo, MS
> Days per year with 90 F+ temp.: 70
> Highest temp. on record (1962-2018): 107.0 F
> Normal mid-summer high: 91.7 F
> Normal year-round high: 73.4 F
Source: Davel5957 / Getty Images
46. Oklahoma City, OK
> Days per year with 90 F+ temp.: 71
> Highest temp. on record (1948-2018): 113.0 F
> Normal mid-summer high: 93.9 F
> Normal year-round high: 72.2 F
Source: Ken Lund / Wikimedia Commons
45. Savannah, GA
> Days per year with 90 F+ temp.: 72
> Highest temp. on record (1948-2018): 105.0 F
> Normal mid-summer high: 92.4 F
> Normal year-round high: 77.4 F
Source: Davel5957 / Getty Images
44. Tulsa, OK
> Days per year with 90 F+ temp.: 73
> Highest temp. on record (1938-2018): 113.0 F
> Normal mid-summer high: 93.5 F
> Normal year-round high: 71.7 F
Source: SpVVK / Getty Images
43. Sacramento, CA
> Days per year with 90 F+ temp.: 74
> Highest temp. on record (1941-2018): 115.0 F
> Normal mid-summer high: 92.1 F
> Normal year-round high: 73.6 F
Source: SeanPavonePhoto / Getty Images
42. West Palm Beach, FL
> Days per year with 90 F+ temp.: 75
> Highest temp. on record (1938-2018): 101.0 F
> Normal mid-summer high: 90.1 F
> Normal year-round high: 82.9 F
Source: Sami99tr / Wikimedia Commons
41. New Orleans, LA
> Days per year with 90 F+ temp.: 75
> Highest temp. on record (1948-2018): 102.0 F
> Normal mid-summer high: 91.2 F
> Normal year-round high: 78.2 F
Source: Davel5957 / Getty Images
40. Little Rock, AR
> Days per year with 90 F+ temp.: 75
> Highest temp. on record (1938-2018): 114.0 F
> Normal mid-summer high: 92.6 F
> Normal year-round high: 72.8 F
Source: Sean Pavone / Getty Images
39. Mobile, AL
> Days per year with 90 F+ temp.: 76
> Highest temp. on record (1948-2018): 105.0 F
> Normal mid-summer high: 90.5 F
> Normal year-round high: 76.7 F
Source: Sean Pavone / Getty Images
38. Columbus, GA
> Days per year with 90 F+ temp.: 78
> Highest temp. on record (1948-2018): 106.0 F
> Normal mid-summer high: 92.2 F
> Normal year-round high: 76.2 F
Source: DenisTangneyJr / Getty Images
37. Fort Smith, AR
> Days per year with 90 F+ temp.: 78
> Highest temp. on record (1945-2018): 115.0 F
> Normal mid-summer high: 93.4 F
> Normal year-round high: 72.8 F
Source: SeanPavonePhoto / Getty Images
36. Columbia, SC
> Days per year with 90 F+ temp.: 79
> Highest temp. on record (1948-2018): 109.0 F
> Normal mid-summer high: 92.7 F
> Normal year-round high: 75.4 F
Source: Meinzahn / Getty Images
35. Lake Charles, LA
> Days per year with 90 F+ temp.: 80
> Highest temp. on record (1961-2018): 107.0 F
> Normal mid-summer high: 91.9 F
> Normal year-round high: 78.0 F
Source: TraceRouda / Getty Images
34. Jacksonville, FL
> Days per year with 90 F+ temp.: 82
> Highest temp. on record (1938-2018): 105.0 F
> Normal mid-summer high: 92.0 F
> Normal year-round high: 79.3 F
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Source: tntemerson / Getty Images
33. Stockton, CA
> Days per year with 90 F+ temp.: 83
> Highest temp. on record (1948-2018): 115.0 F
> Normal mid-summer high: 93.4 F
> Normal year-round high: 74.3 F
Source: SeanPavonePhoto / Getty Images
32. Jackson, MS
> Days per year with 90 F+ temp.: 84
> Highest temp. on record (1963-2018): 107.0 F
> Normal mid-summer high: 91.5 F
> Normal year-round high: 75.5 F
Source: Ron and Patty Thomas / Getty Images
31. Lubbock, TX
> Days per year with 90 F+ temp.: 84
> Highest temp. on record (1947-2018): 114.0 F
> Normal mid-summer high: 92.8 F
> Normal year-round high: 74.3 F
Source: benedek / Getty Images
30. Gainesville, FL
> Days per year with 90 F+ temp.: 85
> Highest temp. on record (1960-2018): 103.0 F
> Normal mid-summer high: 90.9 F
> Normal year-round high: 80.0 F
Source: DenisTangneyJr / Getty Images
29. Meridian, MS
> Days per year with 90 F+ temp.: 85
> Highest temp. on record (1944-2018): 107.0 F
> Normal mid-summer high: 91.8 F
> Normal year-round high: 75.8 F
Source: SeanPavonePhoto / Getty Images
28. Montgomery, AL
> Days per year with 90 F+ temp.: 85
> Highest temp. on record (1948-2018): 106.0 F
> Normal mid-summer high: 92.1 F
> Normal year-round high: 76.5 F
Source: CHBD / Getty Images
27. Tampa, FL
> Days per year with 90 F+ temp.: 87
> Highest temp. on record (1939-2018): 99.0 F
> Normal mid-summer high: 90.2 F
> Normal year-round high: 81.7 F
Source: DenisTangneyJr / Getty Images
26. Port Arthur, TX
> Days per year with 90 F+ temp.: 87
> Highest temp. on record (1947-2018): 108.0 F
> Normal mid-summer high: 92.2 F
> Normal year-round high: 78.3 F
Source: graphiknation / Getty Images
25. Baton Rouge, LA
> Days per year with 90 F+ temp.: 89
> Highest temp. on record (1930-2018): 105.0 F
> Normal mid-summer high: 92.5 F
> Normal year-round high: 78.9 F
Source: Sean Pavone / Getty Images
24. Tallahassee, FL
> Days per year with 90 F+ temp.: 91
> Highest temp. on record (1940-2018): 105.0 F
> Normal mid-summer high: 92.1 F
> Normal year-round high: 79.5 F
Source: Sean Pavone / Getty Images
23. Shreveport, LA
> Days per year with 90 F+ temp.: 93
> Highest temp. on record (1939-2018): 109.0 F
> Normal mid-summer high: 93.4 F
> Normal year-round high: 75.8 F
Source: Artystyk386 / Wikimedia Commons
22. Orlando, FL
> Days per year with 90 F+ temp.: 98
> Highest temp. on record (1952-2018): 101.0 F
> Normal mid-summer high: 91.8 F
> Normal year-round high: 82.4 F
Source: LUNAMARINA / Getty Images
21. Fort Myers, FL
> Days per year with 90 F+ temp.: 99
> Highest temp. on record (1892-2018): 103.0 F
> Normal mid-summer high: 91.9 F
> Normal year-round high: 84.7 F
Source: DenisTangneyJr / Getty Images
20. Roswell, NM
> Days per year with 90 F+ temp.: 99
> Highest temp. on record (1949-2018): 114.0 F
> Normal mid-summer high: 93.7 F
> Normal year-round high: 75.4 F
Source: DenisTangneyJr / Getty Images
19. Abilene, TX
> Days per year with 90 F+ temp.: 101
> Highest temp. on record (1948-2018): 110.0 F
> Normal mid-summer high: 94.2 F
> Normal year-round high: 76.2 F
Source: nthomas76207 / Wikimedia Commons
18. Dallas, TX
> Days per year with 90 F+ temp.: 103
> Highest temp. on record (1939-2018): 112.0 F
> Normal mid-summer high: N/A
> Normal year-round high: 76.6 F
Source: Sean Pavone / Getty Images
17. Houston, TX
> Days per year with 90 F+ temp.: 104
> Highest temp. on record (1969-2018): 109.0 F
> Normal mid-summer high: 92.3 F
> Normal year-round high: 78.5 F
Source: Doug Kerr from Albany, NY, United States / Wikimedia Commons
16. Redding, CA
> Days per year with 90 F+ temp.: 105
> Highest temp. on record (1986-2018): 118.0 F
> Normal mid-summer high: 94.9 F
> Normal year-round high: 72.1 F
Source: VallarieE / Getty Images
15. El Paso, TX
> Days per year with 90 F+ temp.: 107
> Highest temp. on record (1938-2018): 114.0 F
> Normal mid-summer high: 95.5 F
> Normal year-round high: 77.4 F
Source: DenisTangneyJr / Getty Images
14. Wichita Falls, TX
> Days per year with 90 F+ temp.: 107
> Highest temp. on record (1907-2018): 117.0 F
> Normal mid-summer high: 96.9 F
> Normal year-round high: 75.7 F
Source: Davel5957 / Getty Images
13. Fresno, CA
> Days per year with 90 F+ temp.: 108
> Highest temp. on record (1948-2018): 113.0 F
> Normal mid-summer high: 98.4 F
> Normal year-round high: 76.7 F
Source: LPETTET / Getty Images
12. Bakersfield, CA
> Days per year with 90 F+ temp.: 110
> Highest temp. on record (1937-2018): 115.0 F
> Normal mid-summer high: 97.1 F
> Normal year-round high: 76.8 F
Source: Billy Hathorn / Wikimedia Commons
11. Victoria, TX
> Days per year with 90 F+ temp.: 111
> Highest temp. on record (1953-2018): 111.0 F
> Normal mid-summer high: 95.0 F
> Normal year-round high: 80.7 F
Source: Hundley_Photography / Getty Images
10. Waco, TX
> Days per year with 90 F+ temp.: 111
> Highest temp. on record (1941-2018): 114.0 F
> Normal mid-summer high: 96.8 F
> Normal year-round high: 77.8 F
Source: RoschetzkyIstockPhoto / Getty Images
9. Corpus Christi, TX
> Days per year with 90 F+ temp.: 112
> Highest temp. on record (1948-2018): 109.0 F
> Normal mid-summer high: 94.4 F
> Normal year-round high: 81.6 F
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Source: DenisTangneyJr / Getty Images
8. San Angelo, TX
> Days per year with 90 F+ temp.: 114
> Highest temp. on record (1907-2018): 111.0 F
> Normal mid-summer high: 95.1 F
> Normal year-round high: 78.2 F
Source: NicolasMcComber / Getty Images
7. Austin, TX
> Days per year with 90 F+ temp.: 114
> Highest temp. on record (1938-2018): 112.0 F
> Normal mid-summer high: N/A
> Normal year-round high: 79.7 F
Source: mobili / Flickr
6. San Antonio, TX
> Days per year with 90 F+ temp.: 116
> Highest temp. on record (1946-2018): 111.0 F
> Normal mid-summer high: 97.5 F
> Normal year-round high: 80.7 F
Source: DenisTangneyJr / Getty Images
5. Brownsville, TX
> Days per year with 90 F+ temp.: 125
> Highest temp. on record (1898-2018): 106.0 F
> Normal mid-summer high: 94.4 F
> Normal year-round high: 83.5 F
Source: M. Kaercher / Getty Images
4. Del Rio, TX
> Days per year with 90 F+ temp.: 134
> Highest temp. on record (1951-2018): 112.0 F
> Normal mid-summer high: 97.1 F
> Normal year-round high: 81.6 F
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Source: f11photo / Getty Images
3. Las Vegas, NV
> Days per year with 90 F+ temp.: 135
> Highest temp. on record (1948-2018): 117.0 F
> Normal mid-summer high: 104.1 F
> Normal year-round high: 79.6 F
Source: dszc / Getty Images
2. Tucson, AZ
> Days per year with 90 F+ temp.: 147
> Highest temp. on record (1946-2018): 117.0 F
> Normal mid-summer high: 100.2 F
> Normal year-round high: 82.9 F
Source: Public Domain / Wikimedia Commons
1. Phoenix, AZ
> Days per year with 90 F+ temp.: 169
> Highest temp. on record (1933-2018): 122.0 F
> Normal mid-summer high: 106.1 F
> Normal year-round high: 86.6 F
Detailed Findings
The majority of these cities are located in the Southern states. Texas has the most cities on this list of hottest U.S. cities, with 16, followed by Florida with 8. Among the other hottest states in the country with numerous cities on our list are Louisiana and Mississippi.
Many of the hottest cities in America are also relatively dense and populous urban areas. As human-made creations such as buildings, roads, and other infrastructure replace natural landscapes, temperatures often rise. The result is what is referred to as a “heat island.” In the evening, the temperature in an urban heat island can be as much as 22 degrees warmer than in nearby rural areas. This excess heat can contribute to cities having increasingly unpleasant weather.
Methodology
To determine the hottest cities in America, 24/7 Wall St. ranked 192 cities based on the average number of 90-plus degree days per year, using climate data from the National Oceanic Atmospheric Administration’s 2018 Comparative Climatic Data report. In cases where multiple cities had the same amount of 90-plus degree days per year, the city with the higher average daily maximum temperature during its hottest month was given the higher rank. Only cities with populations of at least 10,000 were considered.
Averages for each city were calculated over varying periods, depending on when the city began keeping records.
The normal mid-summer high temperature is the 30-year average daily maximum temperature from the month with the highest average daily temperature for each city using data recorded between 1981 and 2010. The normal year round high temperature is the 30-year average daily maximum temperature from 1981 to 2010. Highest temperature on record refers to the highest temperature recorded at each city’s weather station, and this figure may differ from citywide or statewide figures. A full year’s data was not always available for the first year listed in each city’s range of recorded temperatures.
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