Climate almanac
Duluth
Minnesota, United States · 46.78°, -92.11°
What is the weather like in Duluth in September?
In September, Duluth is typically 68°F (20°C) during the day and 58°F (14°C) at night. The month brings about 4.6 in (117 mm) of precipitation in total.
- Average high68°F (20°C)
- Average low58°F (14°C)
- Precipitation4.6 in (117 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)