Lowest September Temperatures in San Luis Obispo
A list of the lowest temperatures ever recorded in the month of
September in
San Luis Obispo, California from 1893–2024.
What's the coldest it has ever gotten in San Luis Obispo in September?
The coldest September temperature in San Luis Obispo, California history was 38 °F which occurred on September 5, 1930.
| Rank |
Temperature |
Date |
| 1 |
38 °F |
September 5, 1930 |
| 2 |
40 °F |
September 26, 1948 |
| 3 |
41 °F |
September 19, 1989 |
| 3 |
41 °F |
September 18, 1974 |
| 3 |
41 °F |
September 23, 1962 |
| 3 |
41 °F |
September 30, 1954 |
| 3 |
41 °F |
September 4, 1930 |
| 8 |
42 °F |
September 29, 2019 |
| 8 |
42 °F |
September 1, 1963 |
| 8 |
42 °F |
September 26, 1953 |
| 8 |
42 °F |
September 13, 1952 |
| 8 |
42 °F |
September 29, 1948 |
| 8 |
42 °F |
September 25, 1948 |
| 8 |
42 °F |
September 30, 1930 |
| 8 |
42 °F |
September 3, 1930 |
| 8 |
42 °F |
September 24, 1929 |
| 17 |
43 °F |
September 30, 2019 |
| 17 |
43 °F |
September 7, 2002 |
| 17 |
43 °F |
September 1, 1999 |
| 17 |
43 °F |
September 26, 1993 |
| 17 |
43 °F |
September 19, 1988 |
| 17 |
43 °F |
September 13, 1988 |
| 17 |
43 °F |
September 17, 1986 |
| 17 |
43 °F |
September 15, 1974 |
| 17 |
43 °F |
September 22, 1970 |
| 17 |
43 °F |
September 14, 1970 |
| 17 |
43 °F |
September 29, 1964 |
| 17 |
43 °F |
September 28, 1964 |
| 17 |
43 °F |
September 7, 1954 |
| 17 |
43 °F |
September 15, 1952 |
| 17 |
43 °F |
September 30, 1948 |
| 17 |
43 °F |
September 11, 1946 |
| 17 |
43 °F |
September 6, 1930 |