Highest September Temperatures in San Francisco
A list of the highest temperatures ever recorded in the month of
September in
San Francisco, California from 1921–2024.
What's the hottest it has ever gotten in San Francisco in September?
The hottest September temperature in San Francisco, California history was 106 °F which occurred on September 1, 2017.
| Rank |
Temperature |
Date |
| 1 |
106 °F |
September 1, 2017 |
| 2 |
102 °F |
September 2, 2017 |
| 3 |
101 °F |
September 14, 1971 |
| 4 |
100 °F |
September 6, 2020 |
| 4 |
100 °F |
September 8, 1984 |
| 4 |
100 °F |
September 9, 1932 |
| 7 |
99 °F |
September 13, 1971 |
| 7 |
99 °F |
September 21, 1928 |
| 9 |
98 °F |
September 6, 2022 |
| 9 |
98 °F |
September 12, 1983 |
| 9 |
98 °F |
September 11, 1979 |
| 12 |
97 °F |
September 21, 2003 |
| 12 |
97 °F |
September 23, 1997 |
| 12 |
97 °F |
September 22, 1939 |
| 12 |
97 °F |
September 21, 1939 |
| 12 |
97 °F |
September 20, 1939 |
| 17 |
96 °F |
September 5, 2004 |
| 17 |
96 °F |
September 30, 2001 |
| 17 |
96 °F |
September 21, 1943 |
| 17 |
96 °F |
September 20, 1943 |
| 17 |
96 °F |
September 23, 1939 |