Climate almanac
Macomb
Illinois, United States · 40.46°, -90.67°
What is the weather like in Macomb in September?
In September, Macomb is typically 81°F (27°C) during the day and 59°F (15°C) at night. The month brings about 2.8 in (72 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low59°F (15°C)
- Precipitation2.8 in (72 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)