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Monthly climate in Fort Mill, South Carolina, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Fort Mill features a humid subtropical climate (Cfa).Temperatures typically range between 7 °C (45 °F) and 27 °C (81 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 38 °C (100 °F).The average annual precipitation amounts to about 1234 mm (48.6 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually.Fort Mill enjoys an average of 3054 hours of sunshine throughout the year, and daylight varies from 9 hours 49 minutes to 14 hours 27 minutes per day.

Monthly average temperatures in Fort Mill, South Carolina, United States §

The warmest months in Fort Mill are June, July and August, with daily mean temperatures ranging from 25 to 27 °C (77 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 10 °C (45 - 50 °F) throughout the day. On average each year, Fort Mill experiences 145 days above 25 °C (77.0 °F) and 29 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Fort Mill, 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
(78°F)		 26°C
(80°F)		 30°C
(87°F)		 30°C
(87°F)		 36°C
(97°F)		 37°C
(100°F)		 38°C
(100°F)		 36°C
(97°F)		 35°C
(95°F)		 36°C
(97°F)		 28°C
(82°F)		 26°C
(79°F)
Mean maximum 22°C
(72°F)		 24°C
(76°F)		 27°C
(81°F)		 29°C
(85°F)		 34°C
(94°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 34°C
(93°F)		 32°C
(89°F)		 26°C
(79°F)		 22°C
(72°F)
Average high 12°C
(54°F)		 16°C
(60°F)		 18°C
(65°F)		 23°C
(74°F)		 28°C
(82°F)		 30°C
(87°F)		 33°C
(91°F)		 31°C
(88°F)		 29°C
(85°F)		 24°C
(76°F)		 17°C
(62°F)		 14°C
(57°F)
Daily mean 7°C
(45°F)		 10°C
(50°F)		 12°C
(55°F)		 17°C
(63°F)		 22°C
(72°F)		 25°C
(77°F)		 27°C
(81°F)		 26°C
(79°F)		 24°C
(75°F)		 19°C
(66°F)		 11°C
(52°F)		 9°C
(48°F)
Average low 2°C
(36°F)		 5°C
(41°F)		 7°C
(45°F)		 11°C
(52°F)		 17°C
(62°F)		 20°C
(69°F)		 22°C
(73°F)		 22°C
(72°F)		 19°C
(67°F)		 14°C
(57°F)		 6°C
(42°F)		 4°C
(39°F)
Mean minimum -6°C
(21°F)		 -4°C
(25°F)		 -4°C
(25°F)		 1°C
(35°F)		 7°C
(45°F)		 15°C
(59°F)		 19°C
(66°F)		 17°C
(63°F)		 12°C
(55°F)		 4°C
(40°F)		 -3°C
(27°F)		 -4°C
(25°F)
Minimum -12°C
(11°F)		 -6°C
(22°F)		 -6°C
(22°F)		 -2°C
(29°F)		 5°C
(42°F)		 12°C
(53°F)		 17°C
(64°F)		 15°C
(60°F)		 8°C
(47°F)		 0°C
(33°F)		 -4°C
(24°F)		 -7°C
(19°F)

Compare climate in Fort Mill with other places

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

Monthly average precipitation in Fort Mill, South Carolina, United States §

Fort Mill usually has the most precipitation in February, September and December, with an average of 9 rainy days and 124 mm (4.9 inches) of precipitation per month.The driest months in Fort Mill are March, June and October. On average, 85 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fort Mill, 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) 93 (3.7) 120 (4.7) 89 (3.5) 104 (4.1) 106 (4.2) 79 (3.1) 101 (4.0) 114 (4.5) 128 (5.0) 87 (3.4) 90 (3.5) 124 (4.9)
Average precipitation days (≥ 1 mm) 9 11 10 9 10 12 16 14 8 9 8 9

Monthly sunshine hours in Fort Mill, South Carolina, United States §

The sunniest months in Fort Mill are June, July and August, when the sun shines an average of 10 hours 27 minutes a day.Least sunny months in Fort Mill: January, February and December receive an average of 5 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fort Mill, 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 158 171 238 271 292 313 340 307 280 258 224 196
Mean daily daylight hours 10h 5m 10h 55m 11h 59m 13h 5m 14h 0m 14h 27m 14h 12m 13h 23m 12h 20m 11h 15m 10h 18m 9h 49m

Solar UV radiation in Fort Mill, South Carolina, United States §

Fort Mill experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Fort Mill UV Index data.

Average daily maximum UV levels by month for Fort Mill, 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 10 11 11 10 9 8 5 3