Lowest September Temperatures in Rapid City
A list of the lowest temperatures ever recorded in the month of
September in
Rapid City, South Dakota from 1948–2024.
What's the coldest it has ever gotten in Rapid City in September?
The coldest September temperature in Rapid City, South Dakota history was 18 °F which occurred on September 24, 1985.
| Rank |
Temperature |
Date |
| 1 |
18 °F |
September 24, 1985 |
| 2 |
19 °F |
September 22, 1995 |
| 3 |
21 °F |
September 29, 1984 |
| 4 |
22 °F |
September 19, 1991 |
| 4 |
22 °F |
September 26, 1972 |
| 6 |
23 °F |
September 21, 1995 |
| 7 |
24 °F |
September 9, 2020 |
| 7 |
24 °F |
September 14, 1993 |
| 7 |
24 °F |
September 18, 1991 |
| 7 |
24 °F |
September 23, 1985 |
| 7 |
24 °F |
September 25, 1984 |
| 12 |
25 °F |
September 30, 1985 |
| 12 |
25 °F |
September 21, 1983 |
| 12 |
25 °F |
September 30, 1974 |
| 12 |
25 °F |
September 30, 1959 |
| 12 |
25 °F |
September 28, 1951 |
| 17 |
26 °F |
September 24, 2000 |
| 17 |
26 °F |
September 29, 1999 |
| 17 |
26 °F |
September 17, 1991 |
| 17 |
26 °F |
September 28, 1984 |
| 17 |
26 °F |
September 22, 1983 |
| 17 |
26 °F |
September 30, 1961 |
| 17 |
26 °F |
September 27, 1951 |