Climate almanac
Watertown
Wisconsin, United States · 43.19°, -88.73°
What is the weather like in Watertown in September?
In September, Watertown is typically 75°F (24°C) during the day and 56°F (14°C) at night. The month brings about 3.5 in (90 mm) of precipitation in total.
- Average high75°F (24°C)
- Average low56°F (14°C)
- Precipitation3.5 in (90 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)