Highest September Temperatures in Idaho Falls
A list of the highest temperatures ever recorded in the month of
September in
Idaho Falls, Idaho from 1948–2024.
What's the hottest it has ever gotten in Idaho Falls in September?
The hottest September temperature in Idaho Falls, Idaho history was 100 °F which occurred on September 3, 2022.
| Rank |
Temperature |
Date |
| 1 |
100 °F |
September 3, 2022 |
| 2 |
99 °F |
September 7, 2022 |
| 2 |
99 °F |
September 6, 2022 |
| 4 |
97 °F |
September 5, 2022 |
| 4 |
97 °F |
September 4, 2022 |
| 4 |
97 °F |
September 5, 2020 |
| 4 |
97 °F |
September 3, 1950 |
| 8 |
96 °F |
September 1, 2022 |
| 8 |
96 °F |
September 2, 1950 |
| 10 |
95 °F |
September 9, 2021 |
| 10 |
95 °F |
September 10, 1959 |
| 12 |
94 °F |
September 1, 2019 |
| 12 |
94 °F |
September 3, 2017 |
| 12 |
94 °F |
September 14, 1990 |
| 12 |
94 °F |
September 1, 1983 |
| 12 |
94 °F |
September 6, 1955 |
| 12 |
94 °F |
September 5, 1955 |
| 18 |
93 °F |
September 2, 2022 |
| 18 |
93 °F |
September 2, 2007 |
| 18 |
93 °F |
September 4, 1998 |
| 18 |
93 °F |
September 3, 1998 |
| 18 |
93 °F |
September 11, 1990 |
| 18 |
93 °F |
September 7, 1979 |
| 18 |
93 °F |
September 5, 1976 |
| 18 |
93 °F |
September 4, 1950 |
| 18 |
93 °F |
September 1, 1950 |