Lowest September Temperatures in Watertown
A list of the lowest temperatures ever recorded in the month of
September in
Watertown, South Dakota from 1893–2024.
What's the coldest it has ever gotten in Watertown in September?
The coldest September temperature in Watertown, South Dakota history was 9 °F which occurred on September 29, 1899.
| Rank |
Temperature |
Date |
| 1 |
9 °F |
September 29, 1899 |
| 2 |
19 °F |
September 28, 1942 |
| 3 |
20 °F |
September 26, 1965 |
| 3 |
20 °F |
September 27, 1942 |
| 3 |
20 °F |
September 30, 1939 |
| 3 |
20 °F |
September 20, 1918 |
| 7 |
21 °F |
September 30, 1974 |
| 7 |
21 °F |
September 22, 1974 |
| 7 |
21 °F |
September 29, 1939 |
| 7 |
21 °F |
September 25, 1926 |
| 7 |
21 °F |
September 27, 1912 |
| 7 |
21 °F |
September 27, 1900 |
| 13 |
22 °F |
September 22, 1913 |
| 13 |
22 °F |
September 28, 1912 |
| 15 |
23 °F |
September 26, 1984 |
| 15 |
23 °F |
September 23, 1983 |
| 15 |
23 °F |
September 27, 1935 |
| 15 |
23 °F |
September 21, 1934 |
| 15 |
23 °F |
September 28, 1930 |
| 15 |
23 °F |
September 18, 1929 |
| 15 |
23 °F |
September 30, 1920 |
| 15 |
23 °F |
September 28, 1908 |
| 15 |
23 °F |
September 30, 1907 |