Climate almanac
Brown Deer
Wisconsin, United States · 43.16°, -87.96°
What is the weather like in Brown Deer in September?
In September, Brown Deer is typically 72°F (22°C) during the day and 59°F (15°C) at night. The month brings about 3.5 in (88 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low59°F (15°C)
- Precipitation3.5 in (88 mm)
- Clear or mostly clear days13
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)