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Monthly climate in South Sumter, South Carolina, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification South Sumter features a humid subtropical climate (Cfa).Temperatures typically range between 9 °C (48 °F) and 28 °C (82 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1237 mm (48.7 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually.South Sumter enjoys an average of 3208 hours of sunshine throughout the year, and daylight varies from 9 hours 55 minutes to 14 hours 21 minutes per day.

Monthly average temperatures in South Sumter, South Carolina, United States §

The warmest months in South Sumter are June, July and August, with daily mean temperatures ranging from 26 to 28 °C (79 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 12 °C (48 - 54 °F) throughout the day. On average each year, South Sumter experiences 172 days above 25 °C (77.0 °F) and 20 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in South Sumter, South Carolina, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 27°C
(81°F)		 28°C
(83°F)		 31°C
(88°F)		 32°C
(90°F)		 37°C
(100°F)		 39°C
(103°F)		 38°C
(100°F)		 37°C
(99°F)		 37°C
(99°F)		 38°C
(100°F)		 30°C
(87°F)		 26°C
(80°F)
Mean maximum 24°C
(76°F)		 27°C
(80°F)		 29°C
(85°F)		 31°C
(88°F)		 35°C
(95°F)		 35°C
(95°F)		 36°C
(97°F)		 36°C
(97°F)		 35°C
(96°F)		 33°C
(92°F)		 28°C
(82°F)		 24°C
(76°F)
Average high 14°C
(58°F)		 18°C
(65°F)		 20°C
(68°F)		 24°C
(76°F)		 29°C
(84°F)		 31°C
(88°F)		 32°C
(91°F)		 32°C
(90°F)		 31°C
(87°F)		 26°C
(80°F)		 19°C
(66°F)		 16°C
(61°F)
Daily mean 9°C
(48°F)		 12°C
(54°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(74°F)		 26°C
(79°F)		 28°C
(82°F)		 27°C
(81°F)		 25°C
(78°F)		 21°C
(69°F)		 13°C
(55°F)		 10°C
(51°F)
Average low 4°C
(40°F)		 7°C
(44°F)		 8°C
(48°F)		 12°C
(55°F)		 18°C
(65°F)		 22°C
(71°F)		 23°C
(74°F)		 23°C
(74°F)		 21°C
(69°F)		 15°C
(60°F)		 7°C
(45°F)		 5°C
(42°F)
Mean minimum -6°C
(22°F)		 -4°C
(26°F)		 -3°C
(27°F)		 3°C
(37°F)		 9°C
(48°F)		 16°C
(61°F)		 20°C
(68°F)		 19°C
(66°F)		 14°C
(57°F)		 6°C
(43°F)		 -2°C
(29°F)		 -4°C
(26°F)
Minimum -9°C
(16°F)		 -6°C
(22°F)		 -4°C
(24°F)		 -1°C
(31°F)		 6°C
(44°F)		 13°C
(55°F)		 17°C
(63°F)		 17°C
(62°F)		 10°C
(51°F)		 2°C
(36°F)		 -3°C
(26°F)		 -6°C
(21°F)

Compare climate in South Sumter with other places

Compare temperature, precipitation, sunshine, UV index in South Sumter, South Carolina, United States with other places around the world.

Monthly average precipitation in South Sumter, South Carolina, United States §

South Sumter usually has the most precipitation in July, September and December, with an average of 11 rainy days and 140 mm (5.5 inches) of precipitation per month.The driest months in South Sumter are March, October and November. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in South Sumter, South Carolina, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 78 (3.1) 95 (3.7) 70 (2.8) 102 (4.0) 97 (3.8) 122 (4.8) 144 (5.7) 128 (5.0) 136 (5.4) 56 (2.2) 67 (2.6) 141 (5.5)
Average precipitation days (≥ 1 mm) 8 9 10 7 9 15 17 16 8 9 8 10

Monthly sunshine hours in South Sumter, South Carolina, United States §

The sunniest months in South Sumter are May, June and July, when the sun shines an average of 10 hours 32 minutes a day.Least sunny months in South Sumter: January, February and December receive an average of 6 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in South Sumter, South Carolina, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 172 188 253 289 318 311 340 309 298 279 239 206
Mean daily daylight hours 10h 10m 10h 58m 11h 59m 13h 2m 13h 55m 14h 21m 14h 7m 13h 20m 12h 20m 11h 17m 10h 22m 9h 55m

Solar UV radiation in South Sumter, South Carolina, United States §

South Sumter experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly South Sumter UV Index data.

Average daily maximum UV levels by month for South Sumter, South Carolina, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 7 8 10 11 11 11 10 9 8 6 4