Climate almanac
Union
South Carolina, United States · 34.72°, -81.62°
What is the weather like in Union in May?
In May, Union is typically 81°F (27°C) during the day and 62°F (17°C) at night. The month brings about 4.2 in (107 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low62°F (17°C)
- Precipitation4.2 in (107 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)