Climate almanac
Decorah
Iowa, United States · 43.30°, -91.79°
What is the weather like in Decorah in August?
In August, Decorah is typically 80°F (27°C) during the day and 62°F (17°C) at night. The month brings about 4.3 in (110 mm) of precipitation in total.
- Average high80°F (27°C)
- Average low62°F (17°C)
- Precipitation4.3 in (110 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)