Lowest September Temperatures in Key West
A list of the lowest temperatures ever recorded in the month of
September in
Key West, Florida from 1948–2024.
What's the coldest it has ever gotten in Key West in September?
The coldest September temperature in Key West, Florida history was 69 °F which occurred on September 17, 1985.
| Rank |
Temperature |
Date |
| 1 |
69 °F |
September 17, 1985 |
| 2 |
70 °F |
September 8, 1960 |
| 2 |
70 °F |
September 4, 1958 |
| 2 |
70 °F |
September 3, 1950 |
| 5 |
71 °F |
September 29, 2001 |
| 5 |
71 °F |
September 26, 1966 |
| 5 |
71 °F |
September 13, 1958 |
| 5 |
71 °F |
September 9, 1952 |
| 5 |
71 °F |
September 19, 1950 |
| 5 |
71 °F |
September 18, 1950 |
| 5 |
71 °F |
September 29, 1949 |
| 5 |
71 °F |
September 26, 1948 |
| 13 |
72 °F |
September 24, 2023 |
| 13 |
72 °F |
September 13, 1992 |
| 13 |
72 °F |
September 8, 1991 |
| 13 |
72 °F |
September 27, 1990 |
| 13 |
72 °F |
September 27, 1987 |
| 13 |
72 °F |
September 26, 1982 |
| 13 |
72 °F |
September 24, 1963 |
| 13 |
72 °F |
September 16, 1960 |
| 13 |
72 °F |
September 9, 1959 |
| 13 |
72 °F |
September 3, 1958 |
| 13 |
72 °F |
September 30, 1957 |
| 13 |
72 °F |
September 19, 1957 |
| 13 |
72 °F |
September 2, 1952 |
| 13 |
72 °F |
September 20, 1950 |
| 13 |
72 °F |
September 21, 1948 |
| 13 |
72 °F |
September 20, 1948 |
| 13 |
72 °F |
September 18, 1948 |
| 13 |
72 °F |
September 16, 1948 |
| 13 |
72 °F |
September 12, 1948 |