Highest September Temperatures in Ketchum
A list of the highest temperatures ever recorded in the month of
September in
Ketchum, Idaho from 1937–2024.
What's the hottest it has ever gotten in Ketchum in September?
The hottest September temperature in Ketchum, Idaho history was 93 °F which occurred on September 1, 1955.
| Rank |
Temperature |
Date |
| 1 |
93 °F |
September 1, 1955 |
| 2 |
92 °F |
September 7, 1955 |
| 2 |
92 °F |
September 3, 1950 |
| 2 |
92 °F |
September 2, 1950 |
| 2 |
92 °F |
September 1, 1950 |
| 6 |
90 °F |
September 8, 2022 |
| 6 |
90 °F |
September 6, 2020 |
| 6 |
90 °F |
September 4, 1988 |
| 6 |
90 °F |
September 3, 1955 |
| 6 |
90 °F |
September 2, 1955 |
| 6 |
90 °F |
September 6, 1950 |
| 6 |
90 °F |
September 5, 1950 |
| 6 |
90 °F |
September 4, 1950 |
| 14 |
89 °F |
September 7, 2022 |
| 14 |
89 °F |
September 6, 2022 |
| 14 |
89 °F |
September 3, 1988 |
| 14 |
89 °F |
September 2, 1947 |
| 18 |
88 °F |
September 5, 2022 |
| 18 |
88 °F |
September 4, 2022 |
| 18 |
88 °F |
September 5, 1998 |
| 18 |
88 °F |
September 4, 1998 |
| 18 |
88 °F |
September 9, 1944 |
| 18 |
88 °F |
September 7, 1944 |