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Monthly climate in Clemson, South Carolina, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Clemson features a humid subtropical climate (Cfa). Temperatures typically range between 7 °C (44 °F) and 27 °C (80 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 1410 mm (55.5 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Clemson enjoys an average of 3135 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 25 minutes per day.

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

The warmest months in Clemson are June, July and August, with daily mean temperatures ranging from 24 to 27 °C (76 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 10 °C (44 - 50 °F) throughout the day. On average each year, Clemson experiences 138 days above 25 °C (77.0 °F) and 30 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Clemson, 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 25°C
(77°F)		 26°C
(79°F)		 30°C
(87°F)		 30°C
(86°F)		 34°C
(94°F)		 34°C
(93°F)		 35°C
(96°F)		 36°C
(97°F)		 36°C
(96°F)		 37°C
(98°F)		 26°C
(80°F)		 24°C
(75°F)
Mean maximum 21°C
(71°F)		 24°C
(76°F)		 27°C
(80°F)		 29°C
(84°F)		 32°C
(91°F)		 33°C
(91°F)		 35°C
(95°F)		 34°C
(94°F)		 33°C
(92°F)		 31°C
(89°F)		 24°C
(76°F)		 21°C
(70°F)
Average high 12°C
(53°F)		 15°C
(60°F)		 18°C
(65°F)		 22°C
(72°F)		 26°C
(80°F)		 30°C
(86°F)		 32°C
(89°F)		 31°C
(88°F)		 29°C
(84°F)		 24°C
(75°F)		 17°C
(62°F)		 13°C
(56°F)
Daily mean 7°C
(44°F)		 10°C
(50°F)		 12°C
(54°F)		 16°C
(62°F)		 21°C
(70°F)		 24°C
(76°F)		 27°C
(80°F)		 26°C
(79°F)		 23°C
(75°F)		 18°C
(65°F)		 11°C
(52°F)		 8°C
(47°F)
Average low 2°C
(36°F)		 5°C
(40°F)		 7°C
(45°F)		 10°C
(51°F)		 16°C
(61°F)		 20°C
(68°F)		 22°C
(72°F)		 22°C
(71°F)		 19°C
(66°F)		 13°C
(57°F)		 5°C
(42°F)		 4°C
(39°F)
Mean minimum -6°C
(21°F)		 -3°C
(27°F)		 -4°C
(26°F)		 1°C
(35°F)		 7°C
(46°F)		 16°C
(61°F)		 18°C
(65°F)		 17°C
(64°F)		 13°C
(55°F)		 4°C
(40°F)		 -2°C
(28°F)		 -3°C
(26°F)
Minimum -11°C
(12°F)		 -4°C
(25°F)		 -4°C
(24°F)		 -2°C
(29°F)		 5°C
(41°F)		 12°C
(54°F)		 16°C
(60°F)		 16°C
(60°F)		 9°C
(49°F)		 1°C
(33°F)		 -4°C
(24°F)		 -7°C
(20°F)

Compare climate in Clemson with other places

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

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

Clemson usually has the most precipitation in February, October and December, with an average of 11 rainy days and 144 mm (5.7 inches) of precipitation per month. The driest months in Clemson are June, July and November. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Clemson, 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) 104 (4.1) 152 (6.0) 111 (4.4) 129 (5.1) 135 (5.3) 84 (3.3) 83 (3.3) 111 (4.4) 130 (5.1) 142 (5.6) 93 (3.7) 136 (5.4)
Average precipitation days (≥ 1 mm) 9 14 12 9 11 14 14 12 9 10 8 9

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

The sunniest months in Clemson are June, July and August, when the sun shines an average of 10 hours 39 minutes a day. Least sunny months in Clemson: January, February and December receive an average of 5 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Clemson, 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 168 175 239 275 302 320 346 314 291 265 237 198
Mean daily daylight hours 10h 6m 10h 56m 11h 59m 13h 4m 13h 59m 14h 25m 14h 11m 13h 22m 12h 20m 11h 15m 10h 19m 9h 51m

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

Clemson 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, February 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 Clemson UV Index data.

Average daily maximum UV levels by month for Clemson, 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 6 8 10 11 11 11 10 9 8 6 4

Detailed Monthly Weather Insights for Clemson, South Carolina, United States

Discover in-depth weather details for every month in Clemson. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Clemson's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.