Sumter

What is the climate like in Sumter?

The best time to visit Sumter is typically March – May, with trip comfort peaking in October (7.4/10). Sumter is warmest in July, when daily highs average 91°F (33°C), and coolest in January, when lows fall to about 39°F (4°C). The wettest month is typically August and the driest is November; the year sees roughly 47 in (1188 mm) of precipitation.

• Best time to visitMarch – May — comfort peaks in October (7.4/10)
• Warmest monthJuly — average high 91°F (33°C)
• Coolest monthJanuary — average low 39°F (4°C)
• Wettest monthAugust (5.4 in (137 mm))
• Driest monthNovember (2.4 in (60 mm))
• Annual precipitation47 in (1188 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSumter, 2 km away (1901-2026)