Lowest September Temperatures in San Francisco
A list of the lowest temperatures ever recorded in the month of
September in
San Francisco, California from 1921–2024.
What's the coldest it has ever gotten in San Francisco in September?
The coldest September temperature in San Francisco, California history was 48 °F which has occurred 3 times, most recently on September 27, 1955.
| Rank |
Temperature |
Date |
| 1 |
48 °F |
September 27, 1955 |
| 1 |
48 °F |
September 26, 1955 |
| 1 |
48 °F |
September 27, 1926 |
| 4 |
49 °F |
September 23, 2012 |
| 4 |
49 °F |
September 22, 2006 |
| 4 |
49 °F |
September 12, 1970 |
| 4 |
49 °F |
September 28, 1968 |
| 4 |
49 °F |
September 19, 1960 |
| 4 |
49 °F |
September 18, 1960 |
| 4 |
49 °F |
September 30, 1955 |
| 4 |
49 °F |
September 29, 1952 |
| 4 |
49 °F |
September 26, 1926 |
| 13 |
50 °F |
September 24, 2018 |
| 13 |
50 °F |
September 30, 2012 |
| 13 |
50 °F |
September 28, 2012 |
| 13 |
50 °F |
September 25, 2006 |
| 13 |
50 °F |
September 20, 2005 |
| 13 |
50 °F |
September 6, 2001 |
| 13 |
50 °F |
September 5, 1999 |
| 13 |
50 °F |
September 4, 1999 |
| 13 |
50 °F |
September 24, 1993 |
| 13 |
50 °F |
September 23, 1988 |
| 13 |
50 °F |
September 11, 1970 |
| 13 |
50 °F |
September 10, 1970 |
| 13 |
50 °F |
September 10, 1964 |
| 13 |
50 °F |
September 24, 1962 |
| 13 |
50 °F |
September 2, 1962 |
| 13 |
50 °F |
September 23, 1960 |
| 13 |
50 °F |
September 22, 1960 |
| 13 |
50 °F |
September 20, 1955 |
| 13 |
50 °F |
September 12, 1955 |
| 13 |
50 °F |
September 28, 1952 |
| 13 |
50 °F |
September 27, 1952 |
| 13 |
50 °F |
September 30, 1950 |
| 13 |
50 °F |
September 13, 1948 |
| 13 |
50 °F |
September 12, 1948 |
| 13 |
50 °F |
September 10, 1948 |
| 13 |
50 °F |
September 9, 1946 |
| 13 |
50 °F |
September 8, 1946 |
| 13 |
50 °F |
September 10, 1937 |
| 13 |
50 °F |
September 14, 1933 |
| 13 |
50 °F |
September 13, 1933 |
| 13 |
50 °F |
September 8, 1933 |
| 13 |
50 °F |
September 5, 1928 |
| 13 |
50 °F |
September 3, 1928 |