Highest September Temperatures in Key West
A list of the highest temperatures ever recorded in the month of
September in
Key West, Florida from 1948–2024.
What's the hottest it has ever gotten in Key West in September?
The hottest September temperature in Key West, Florida history was 95 °F which has occurred 3 times, most recently on September 14, 2023.
| Rank |
Temperature |
Date |
| 1 |
95 °F |
September 14, 2023 |
| 1 |
95 °F |
September 20, 2018 |
| 1 |
95 °F |
September 3, 2007 |
| 4 |
94 °F |
September 15, 2023 |
| 4 |
94 °F |
September 13, 2023 |
| 4 |
94 °F |
September 12, 2023 |
| 4 |
94 °F |
September 4, 2015 |
| 4 |
94 °F |
September 4, 1951 |
| 4 |
94 °F |
September 8, 1948 |
| 10 |
93 °F |
September 18, 2023 |
| 10 |
93 °F |
September 16, 2023 |
| 10 |
93 °F |
September 28, 2020 |
| 10 |
93 °F |
September 21, 2020 |
| 10 |
93 °F |
September 11, 2020 |
| 10 |
93 °F |
September 8, 2017 |
| 10 |
93 °F |
September 14, 2015 |
| 10 |
93 °F |
September 15, 2007 |
| 10 |
93 °F |
September 5, 2007 |
| 10 |
93 °F |
September 2, 1995 |
| 10 |
93 °F |
September 5, 1993 |
| 10 |
93 °F |
September 22, 1989 |
| 10 |
93 °F |
September 1, 1989 |
| 10 |
93 °F |
September 22, 1987 |
| 10 |
93 °F |
September 20, 1987 |
| 10 |
93 °F |
September 11, 1951 |
| 10 |
93 °F |
September 8, 1951 |
| 10 |
93 °F |
September 3, 1951 |