Climate almanac
Idaho Falls
Idaho, United States · 43.47°, -112.03°
What is the weather like in Idaho Falls in September?
In September, Idaho Falls is typically 76°F (25°C) during the day and 48°F (9°C) at night. The month brings about 1.4 in (35 mm) of precipitation in total.
- Average high76°F (25°C)
- Average low48°F (9°C)
- Precipitation1.4 in (35 mm)
- Clear or mostly clear days20
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)