Climate almanac
Rapid City
South Dakota, United States · 44.08°, -103.23°
What is the weather like in Rapid City in August?
In August, Rapid City is typically 83°F (28°C) during the day and 58°F (14°C) at night. The month brings about 2.3 in (58 mm) of precipitation in total.
- Average high83°F (28°C)
- Average low58°F (14°C)
- Precipitation2.3 in (58 mm)
- Clear or mostly clear days18
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)