The three hottest cities in the US are Key West, Marathon, and North Miami.
The hottest cities in the US are located primarily in five states: Florida, Hawaii, Texas, California, and Arizona. Other states also have cities that enjoy warm weather but it’s not as hot as in these five states.
Florida and Hawaii have by far the highest average monthly temperature year round, with some cities never dropping below 70 °F during the day even in the coldest month.
In this article, I’m going to share with you the 56 hottest cities in the United States with a daily average temperature of at least 75 °F. I’ll describe the top 15 in more detail and share the remaining hot cities in USA in a table.
Check out my list of the coldest cities in the US, too. You may also be interested in my article on the best states for weather, featuring five different weather types and top three picks for each. I encourage you to read my article on the best weather outside of California, too. Another article you may want to read is my article on US states with mild winters as well as my article on the best place to live with warm weather and a low cost of living.
Lastly, I also published an article on the hottest countries in Europe.
Top 15 Hottest Cities in the United States
Here are the top 15 hottest cities in the United States that have the highest average temperature (defined as yearly daily mean temperature). If you love hot climates and want to live somewhere warm year round, all these places will be perfect for you.
1. Key West, Florida – 78.85 °F
The hottest city in the United States is Key West in the Florida Keys. Besides being the hottest, it’s also one of the sunniest cities. It enjoys 3,404 sunshine hours a year. Even in the least sunny month, the sun still shines at least 70% of the time. Due to high humidity, extreme heat is a frequent occurrence. Other weather-related hazard, hurricanes, is also a factor you need to take into consideration.
Average daytime temperature in January: 75.8 °F
Average daytime temperature in July: 90.2 °F
2. Marathon, Florida – 78.8 °F
Marathon is another small city in the Florida Keys. It has virtually the same hot weather as Key West. Since neither Key West nor Marathon have large populations, they don’t offer many art and culture events. But for that you can choose the next city on the list.
Average daytime temperature in January: 75.8 °F
Average daytime temperature in July: 90.9 °F
3. North Miami, Florida – 78.5 °F
North Miami is a suburban city of Miami located about 11 miles north of downtown Miami. According to climate data from Weather.com, it’s slightly warmer than Miami. Miami is the hottest city in America that’s a proper big city. Because of the urban heat island effect, in some areas it may be even hotter than the cities in the Keys.
Average daytime temperature in January: 75 °F
Average daytime temperature in July: 92 °F
4. Honolulu, Hawaii – 78.05 °F
Honolulu is the hottest city in Hawaii and the second hottest city in USA that’s a big city. While its average temperature is lower than in Key West, Honolulu features warm weather year round so that even in the coldest month, the average temperature is still above 80 °F. Honolulu also has a drier semi-arid climate. Surfing is not all this lively city has to offer. There’s a reason why Honolulu attracts so many visitors and new residents. Besides excellent weather and water sports, it also offers world-class restaurants, cultural institutions, and various tourist attractions.
Average daytime temperature in January: 80.5 °F
Average daytime temperature in July: 88.1 °F
5. Kailua-Kona, Hawaii – 77.95 °F
Kailua-Kona is the second hottest city in Hawaii. It’s located on the island of Hawaii and has higher temperatures between December and February than Honolulu.
Average daytime temperature in January: 81.6 °F
Average daytime temperature in July: 86 °F
6. Islamorada, Florida – 77.9 °F
Islamorada is another city in the Florida Keys, benefiting from its hot tropical savanna climate.
Average daytime temperature in January: 72.5 °F
Average daytime temperature in July: 88.7 °F
7. Miami, Florida – 77.45 °F
Miami is the warmest of the biggest cities in the United States. The metropolitan area is home to more than 6 million people. Miami has a lower average temperature than the cities in the Keys because it has cooler nights. It’s still a very hot city, offering endless summer. It’s by far the most cosmopolitan city in this ranking, known for its cultural melting pot.
Average daytime temperature in January: 76.2 °F
Average daytime temperature in July: 90.6 °F
8. McAllen, Texas – 77.35 °F
McAllen is the hottest city in Texas. It’s one of the few hottest US cities that’s not located in Florida or Hawaii. With a hot semi-arid climate, McAllen is hot even in the winter. While Florida is hotter than Texas, McAllen is hotter than some of the hottest parts of Florida.
Average daytime temperature in January: 72.8 °F
Average daytime temperature in July: 98.5 °F
9. Doral, Florida – 77.25 °F
Doral is one of the cities forming the Miami metropolitan area. It’s slightly cooler than downtown Miami and the city of North Miami.
Average daytime temperature in January: 75.3 °F
Average daytime temperature in July: 92.3 °F
10. Pompano Beach, Florida – 77.2 °F
Pompano Beach is located just north of Fort Lauderdale. Both cities share virtually the same climate, with Pompano Beach having its average temperature higher by an imperceptible 0.05 °F.
Average daytime temperature in January: 76.3 °F
Average daytime temperature in July: 90.5 °F
11. Fort Lauderdale, Florida – 77.15 °F
Fort Lauderdale is the second hottest major city in Florida if we exclude the suburban cities of Miami.
Average daytime temperature in January: 75.6 °F
Average daytime temperature in July: 90 °F
12. Kahului, Hawaii – 77.1 °F
Kahului is a census-designated place on the island of Maui. Like Kailua-Kona, it has hotter weather between December and February than Honolulu.
Average daytime temperature in January: 82.2 °F
Average daytime temperature in July: 89.2 °F
13. Kalaeloa, Hawaii – 77 °F
Kalaeloa is a census-designated place on the island of Oahu, west of Honolulu.
Average daytime temperature in January: 80.9 °F
Average daytime temperature in July: 88 °F
14. Kailua, Hawaii – 76.95 °F
Kailua is a census-designated place on Oahu, on the windward coast at Kailua Bay. It has cooler summer weather than Honolulu.
Average daytime temperature in January: 80 °F
Average daytime temperature in July: 85 °F
15. Opa-locka, Florida – 76.9 °F
Opa-locka is another city forming the metropolitan area of Miami. Climate data from NOAA indicates that it has cooler nights than Miami, which results in a lower average temperature.
Average daytime temperature in January: 76.7 °F
Average daytime temperature in July: 90.8 °F
Top 56 Hottest Cities in the US
I created the table below by pulling data from my articles on the warmest cities in Florida, the warmest cities in Hawaii, the warmest cities in Texas, the warmest cities in California, and the warmest cities in Arizona. These articles were created primarily with data from NOAA.
You may also want to read the following articles:
- What City Has the Best Weather in Arizona?
- What City Has the Best Weather in Florida?
- What City Has the Best Weather in Nevada?
- What City Has the Best Weather in Texas?
By default, the cities are sorted by their average temperature but you can sort by any column you want.
|City||State||Average high temperature (°F)||Average low temperature (°F)||Daily mean temperature (°F)||Average high temperature in January (°F)||Average high temperature in July (°F)|
|West Palm Beach||Florida||83.5||68.6||76.05||75.2||90.3|
|North Miami Beach||Florida||83.3||68.8||76.05||75.2||89.6|
|Waimea, Kauai County||Hawaii||83.8||66.5||75.15||79.8||86.8|
Frequently Asked Questions
The hottest city in the United States is Key West in Florida. Its daily mean temperature of 78.85 °F makes it even warmer than Honolulu, the warmest city in Hawaii.
Cities in Arizona have the hottest summers with the highest average temperatures. Yuma (this sunshine city packs the highest number of sunshine hours a year in the world, reaching 4,015 hours), Phoenix, and Glendale have the hottest temperatures, reaching up to 106-107 °F in the hottest month. Other places featuring the hottest weather in the summer are Californian cities in the desert: Indio, Palm Desert, and Palm Springs. Las Vegas, Nevada, also has hot summers with temperatures reaching 105 °F.
The top 3 hottest states are Florida, Hawaii, and Arizona, with the highest number of cities with a yearly average temperature of at least 70 °F. Mention “fantastic weather” and most people will think about these three states.
The hottest cities in the contiguous US during winter are Key West, Marathon and North Miami in Florida (76-78 °F during the day between December and February). Other than that, Honolulu and Kailua-Kona in Hawaii have even higher temperatures of 81-82 °F.
Key West, Florida has very high humidity year round and the highest temperatures in the entire United States. Marathon, also in the Florida Keys, is another hot and humid city.
The hottest place in the contiguous United States at Christmas is Pompano Beach, Florida. Average daytime temperatures in December reach 78.3 °F. If overall in the United States, Kahului in Hawaii takes the first spot with average high temperatures of 83.3 °F in December.
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