Climate almanac
Barrington
Illinois, United States · 42.15°, -88.14°
What is the weather like in Barrington in September?
In September, Barrington is typically 76°F (24°C) during the day and 59°F (15°C) at night. The month brings about 3.2 in (81 mm) of precipitation in total.
- Average high76°F (24°C)
- Average low59°F (15°C)
- Precipitation3.2 in (81 mm)
- Clear or mostly clear days14
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)