Climate almanac
Clear Lake
Iowa, United States · 43.14°, -93.38°
What is the weather like in Clear Lake in September?
In September, Clear Lake is typically 77°F (25°C) during the day and 56°F (14°C) at night. The month brings about 3.5 in (89 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low56°F (14°C)
- Precipitation3.5 in (89 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)