Climate almanac
Union
South Carolina, United States · 34.72°, -81.62°
What is the climate like in Union?
The best time to visit Union is typically September – October, with trip comfort peaking in October (7.2/10). Union is warmest in July, when daily highs average 91°F (33°C), and coolest in January, when lows fall to about 37°F (3°C). The wettest month is typically August and the driest is November; the year sees roughly 48 in (1223 mm) of precipitation.
- Best time to visitSeptember – October — comfort peaks in October (7.2/10)
- Warmest monthJuly — average high 91°F (33°C)
- Coolest monthJanuary — average low 37°F (3°C)
- Wettest monthAugust (5.3 in (134 mm))
- Driest monthNovember (3.0 in (77 mm))
- Annual precipitation48 in (1223 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromSantuck, 13 km away (1895-2026)