South Carolina Climate

South Carolina Climate

South Carolina has a humid subtropical climate (Koppen climate classification Cfa), although high elevation areas in the "Upstate" area have less subtropical characteristics than areas on the Atlantic coastline. In the summer, South Carolina is hot and humid with daytime temperatures averaging between 86-92°F (30-33°C) in most of the state and overnight lows over 70°F (21°C) on the coast and in the high 60s°F (near 20°C) further inland. Winter temperatures are much less uniform in South Carolina. Coastal areas of the state have very mild winters with high temperatures approaching an average of 60°F (16°C) and overnight lows in the 40s°F (5-8°C). Further inland in the higher country, the average January overnight low can be below freezing. While precipitation is abundant the entire year in almost the entire state, near the coast tends to have a slightly wetter summer, while inland March tends to be the wettest month.

Snowfall in South Carolina is not very excessive with coastal areas receiving less than an inch (2.5 cm) on average. It isn't uncommon for areas on the coast (especially the southern coast) to receive no recordable snowfall in a given year, although it usually receives at least a small dusting of snow annually. The interior receives a little more snow, although nowhere in the state averages more than 6 inches (15 cm) a year.

The state is prone to tropical cyclones and it is a yearly concern during hurricane season which is from June-November, although the peak time of vulnerability for the southeast Atlantic coast is from early August to early October when the Cape Verde hurricane season lasts. South Carolina averages around 50 days of thunderstorm activity a year, which is less than some of the states further south and is slightly less vulnerable to tornadoes than the states which border on the Gulf of Mexico. Still, some notable tornadoes have struck South Carolina and the state averages around 14 tornadoes annually.

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