Miami & Other Florida Cities That Hit Record High Temps This Month

Average temperatures across the continental United States hit an all-time monthly high in July 2026. According to the National Oceanic and Atmospheric Administration, the average temperature in the Lower 48 was 76.9°F last month – exceeding the previous record of 76.8°F that has stood for nearly a century. In parts of the Southeast, August has offered little relief from the heat. 

Earlier this month, a heatwave pushed the mercury well into the triple digits over a large swath of the country. Since mid-August, over 90 million Americans – from Texas over to the Carolinas and south through Florida – were under Extreme Heat Warnings or Heat Alerts from the National Weather Service. 

While some of the highest temperatures were reported inland – in parts of Louisiana, Texas, and Oklahoma – the heat wave also pushed temperatures to historic triple-digit highs across Florida. In Miami, a city where the proximity of the ocean tends to moderate temperatures, the mercury recently rose to 100°F, matching the local all-time record high set in 1942. Miami is one of several cities in Florida where triple digit temperatures in recent weeks either matched or broke long-standing records.

Using data from NOAA’s Northeast Regional Climate Center, Climate Crisis 247 identified the Florida cities where 100-plus degree temperatures hit all-time records this month. For context, we also included average summer temperatures in 2025 and during the 20th century at the county level using data from the NOAA. All additional supplemental data is also from NOAA. 

9. Everglades City 5 NE (Collier County, Florida)

• Record high temperature: 100°F on August 14, 2026
• Pre-2026 record high temperature: 100°F on August 17, 2015
• 2025 summer temperature norms in Collier County: 93.3°F daily high; 83.6°F daily avg. 
• Historical summer temperature norms in Collier County: 91.2°F daily high; 79.7°F daily avg. 
• Year record keeping began at Everglades City 5 NE Weather Station: 2007

8. Merritt Island Florida (Brevard County, Florida)

• Record high temperature: 100°F on August 19, 2026
• Pre-2026 record high temperature: 99°F on July 29, 2025
• 2025 summer temperature norms in Brevard County: 89.8°F daily high; 81.8°F daily avg. 
• Historical summer temperature norms in Brevard County: 88.9°F daily high; 78.6°F daily avg. 
• Year record keeping began at Merritt Island Florida Weather Station: 2002

7. Cache Florida (Miami-Dade County, Florida)

• Record high temperature: 100°F on August 19, 2026
• Pre-2026 record high temperature: 99°F on June 16, 2011
• 2025 summer temperature norms in Miami-Dade County: 91.1°F daily high; 83.8°F daily avg. 
• Historical summer temperature norms in Miami-Dade County: 89.8°F daily high; 79.4°F daily avg. 
• Year record keeping began at Cache Florida Weather Station: 1999

6. Miami International AP (Miami-Dade County, Florida)

• Record high temperature: 100°F on August 18, 2026
• Pre-2026 record high temperature: 100°F on July 21, 1942
• 2025 summer temperature norms in Miami-Dade County: 91.1°F daily high; 83.8°F daily avg. 
• Historical summer temperature norms in Miami-Dade County: 89.8°F daily high; 79.4°F daily avg. 
• Year record keeping began at Miami International AP Weather Station: 1937

5. Fort Lauderdale (Broward County, Florida)

• Record high temperature: 100°F on August 20, 2026
• Pre-2026 record high temperature: 100°F on August 4, 1944
• 2025 summer temperature norms in Broward County: 92.6°F daily high; 83.5°F daily avg. 
• Historical summer temperature norms in Broward County: 90.2°F daily high; 79.3°F daily avg. 
• Year record keeping began at Fort Lauderdale Weather Station: 1912

4. Mt Plymouth 1SSW (Lake County, Florida)

• Record high temperature: 101°F on August 14, 2026
• Pre-2026 record high temperature: 100°F on July 29, 2025
• 2025 summer temperature norms in Lake County: 91.9°F daily high; 82.1°F daily avg. 
• Historical summer temperature norms in Lake County: 90.6°F daily high; 78.6°F daily avg. 
• Year record keeping began at Mt Plymouth 1SSW Weather Station: 2002

3. Fort Lauderdale Beach (Broward County, Florida)

• Record high temperature: 101°F on August 19, 2026
• Pre-2026 record high temperature: 99°F on August 23, 2025
• 2025 summer temperature norms in Broward County: 92.6°F daily high; 83.5°F daily avg. 
• Historical summer temperature norms in Broward County: 90.2°F daily high; 79.3°F daily avg. 
• Year record keeping began at Fort Lauderdale Beach Weather Station: 1952

2. Homestead Gen Aviation AP (Miami-Dade County, Florida)

• Record high temperature: 102°F on August 19, 2026
• Pre-2026 record high temperature: 100°F on May 20, 2024
• 2025 summer temperature norms in Miami-Dade County: 91.1°F daily high; 83.8°F daily avg. 
• Historical summer temperature norms in Miami-Dade County: 89.8°F daily high; 79.4°F daily avg. 
• Year record keeping began at Homestead Gen Aviation AP Weather Station: 1990

1. Loxahatchee NWR (Palm Beach County, Florida)

• Record high temperature: 105°F on August 13, 2026
• Pre-2026 record high temperature: 98°F on June 16, 2011
• 2025 summer temperature norms in Palm Beach County: 93.0°F daily high; 83.3°F daily avg. 
• Historical summer temperature norms in Palm Beach County: 90.1°F daily high; 79.0°F daily avg. 
• Year record keeping began at Loxahatchee NWR Weather Station: 1990