Climate almanac
Fairfield
Iowa, United States · 41.01°, -91.96°
What is the weather like in Fairfield in September?
In September, Fairfield is typically 81°F (27°C) during the day and 59°F (15°C) at night. The month brings about 3.7 in (95 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low59°F (15°C)
- Precipitation3.7 in (95 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)