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Monthly climate in Flat Rock, North Carolina, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Flat Rock features a humid subtropical climate (Cfa).Temperatures typically range between 4 °C (40 °F) and 23 °C (74 °F) through the year, but rarely can drop to -14 °C (7 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 1522 mm (59.9 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually.Flat Rock enjoys an average of 3053 hours of sunshine throughout the year, and daylight varies from 9 hours 48 minutes to 14 hours 29 minutes per day.

Monthly average temperatures in Flat Rock, North Carolina, United States §

The warmest months in Flat Rock are June, July and August, with daily mean temperatures ranging from 22 to 23 °C (71 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 45 °F) throughout the day. On average each year, Flat Rock experiences 104 days above 25 °C (77.0 °F) and 55 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Flat Rock, North 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 21°C
(71°F)		 25°C
(78°F)		 29°C
(85°F)		 28°C
(82°F)		 32°C
(89°F)		 31°C
(87°F)		 32°C
(91°F)		 31°C
(89°F)		 32°C
(90°F)		 33°C
(91°F)		 25°C
(77°F)		 23°C
(73°F)
Mean maximum 20°C
(68°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(81°F)		 30°C
(85°F)		 29°C
(85°F)		 31°C
(88°F)		 31°C
(88°F)		 30°C
(87°F)		 29°C
(85°F)		 23°C
(73°F)		 20°C
(67°F)
Average high 9°C
(49°F)		 13°C
(55°F)		 15°C
(60°F)		 20°C
(68°F)		 24°C
(75°F)		 26°C
(80°F)		 28°C
(83°F)		 28°C
(82°F)		 26°C
(79°F)		 21°C
(70°F)		 14°C
(58°F)		 11°C
(52°F)
Daily mean 4°C
(40°F)		 7°C
(45°F)		 10°C
(50°F)		 14°C
(57°F)		 18°C
(65°F)		 22°C
(71°F)		 23°C
(74°F)		 23°C
(73°F)		 21°C
(69°F)		 16°C
(61°F)		 8°C
(47°F)		 6°C
(43°F)
Average low -0°C
(32°F)		 3°C
(37°F)		 5°C
(41°F)		 8°C
(47°F)		 13°C
(56°F)		 17°C
(63°F)		 19°C
(66°F)		 18°C
(65°F)		 16°C
(61°F)		 11°C
(52°F)		 3°C
(38°F)		 1°C
(35°F)
Mean minimum -10°C
(14°F)		 -5°C
(23°F)		 -5°C
(23°F)		 -1°C
(30°F)		 4°C
(40°F)		 12°C
(55°F)		 15°C
(59°F)		 14°C
(58°F)		 10°C
(50°F)		 1°C
(35°F)		 -4°C
(25°F)		 -8°C
(18°F)
Minimum -14°C
(7°F)		 -6°C
(22°F)		 -7°C
(19°F)		 -3°C
(27°F)		 1°C
(34°F)		 9°C
(48°F)		 13°C
(55°F)		 13°C
(55°F)		 6°C
(43°F)		 -2°C
(29°F)		 -7°C
(20°F)		 -12°C
(10°F)

Compare climate in Flat Rock with other places

Compare temperature, precipitation, sunshine, UV index in Flat Rock, North Carolina, United States with other places around the world.

Monthly average precipitation in Flat Rock, North Carolina, United States §

Flat Rock usually has the most precipitation in August, September and October, with an average of 11 rainy days and 156 mm (6.1 inches) of precipitation per month.The driest months in Flat Rock are March, June and November. On average, 97 mm (3.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Flat Rock, North 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) 132 (5.2) 103 (4.0) 139 (5.5) 141 (5.5) 99 (3.9) 115 (4.5) 145 (5.7) 149 (5.9) 174 (6.8) 89 (3.5) 133 (5.2)
Average precipitation days (≥ 1 mm) 8 13 13 10 12 15 19 15 10 10 8 9

Monthly sunshine hours in Flat Rock, North Carolina, United States §

The sunniest months in Flat Rock are June, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Flat Rock: January, February and December receive an average of 5 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Flat Rock, North 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 164 173 233 268 295 312 335 307 283 255 228 195
Mean daily daylight hours 10h 4m 10h 54m 11h 59m 13h 6m 14h 1m 14h 29m 14h 14m 13h 24m 12h 20m 11h 14m 10h 17m 9h 48m

Solar UV radiation in Flat Rock, North Carolina, United States §

Flat Rock 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 Flat Rock UV Index data.

Average daily maximum UV levels by month for Flat Rock, North 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