Climate almanac
Indiana
Pennsylvania, United States · 40.62°, -79.15°
What is the weather like in Indiana in September?
In September, Indiana is typically 76°F (24°C) during the day and 58°F (14°C) at night. The month brings about 4.1 in (105 mm) of precipitation in total.
- Average high76°F (24°C)
- Average low58°F (14°C)
- Precipitation4.1 in (105 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)