Climate almanac
Sumter
South Carolina, United States · 33.92°, -80.34°
What is the weather like in Sumter in August?
In August, Sumter is typically 89°F (32°C) during the day and 74°F (23°C) at night. The month brings about 5.4 in (137 mm) of precipitation in total.
- Average high89°F (32°C)
- Average low74°F (23°C)
- Precipitation5.4 in (137 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)