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Monthly climate in Williamston, North Carolina, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Williamston features a humid subtropical climate (Cfa).Temperatures typically range between 7 °C (45 °F) and 27 °C (80 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1351 mm (53.2 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Williamston enjoys an average of 3188 hours of sunshine throughout the year, and daylight varies from 9 hours 45 minutes to 14 hours 32 minutes per day.

Monthly average temperatures in Williamston, North Carolina, United States §

The warmest months in Williamston are June, July and August, with daily mean temperatures ranging from 25 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 (45 - 50 °F) throughout the day. On average each year, Williamston experiences 146 days above 25 °C (77.0 °F) and 31 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Williamston, 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 25°C
(77°F)		 28°C
(82°F)		 30°C
(87°F)		 31°C
(89°F)		 36°C
(97°F)		 36°C
(97°F)		 37°C
(98°F)		 35°C
(95°F)		 36°C
(97°F)		 35°C
(96°F)		 28°C
(84°F)		 25°C
(78°F)
Mean maximum 23°C
(73°F)		 26°C
(78°F)		 27°C
(82°F)		 30°C
(86°F)		 33°C
(92°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(94°F)		 34°C
(93°F)		 31°C
(89°F)		 27°C
(81°F)		 23°C
(74°F)
Average high 12°C
(54°F)		 16°C
(60°F)		 17°C
(64°F)		 23°C
(73°F)		 27°C
(80°F)		 29°C
(85°F)		 32°C
(89°F)		 31°C
(88°F)		 29°C
(84°F)		 24°C
(76°F)		 18°C
(64°F)		 15°C
(59°F)
Daily mean 7°C
(45°F)		 10°C
(50°F)		 12°C
(53°F)		 17°C
(62°F)		 21°C
(70°F)		 25°C
(76°F)		 27°C
(80°F)		 26°C
(79°F)		 24°C
(75°F)		 19°C
(67°F)		 12°C
(53°F)		 9°C
(49°F)
Average low 2°C
(36°F)		 4°C
(40°F)		 6°C
(43°F)		 11°C
(52°F)		 16°C
(62°F)		 20°C
(69°F)		 23°C
(73°F)		 22°C
(72°F)		 20°C
(68°F)		 14°C
(58°F)		 7°C
(44°F)		 4°C
(40°F)
Mean minimum -9°C
(16°F)		 -5°C
(23°F)		 -4°C
(26°F)		 2°C
(35°F)		 7°C
(45°F)		 14°C
(58°F)		 18°C
(65°F)		 17°C
(64°F)		 13°C
(55°F)		 5°C
(41°F)		 -2°C
(29°F)		 -4°C
(24°F)
Minimum -16°C
(3°F)		 -8°C
(19°F)		 -5°C
(24°F)		 -1°C
(30°F)		 4°C
(40°F)		 11°C
(52°F)		 15°C
(59°F)		 14°C
(58°F)		 11°C
(52°F)		 2°C
(36°F)		 -3°C
(26°F)		 -8°C
(18°F)

Compare climate in Williamston with other places

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

Monthly average precipitation in Williamston, North Carolina, United States §

Williamston usually has the most precipitation in June, July and August, with an average of 16 rainy days and 161 mm (6.3 inches) of precipitation per month.The driest months in Williamston are February, March and October. On average, 77 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Williamston, 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) 94 (3.7) 89 (3.5) 67 (2.6) 100 (3.9) 116 (4.6) 151 (6.0) 152 (6.0) 181 (7.1) 129 (5.1) 76 (3.0) 94 (3.7) 102 (4.0)
Average precipitation days (≥ 1 mm) 8 11 9 10 11 16 16 18 11 8 9 10

Monthly sunshine hours in Williamston, North Carolina, United States §

The sunniest months in Williamston are June, July and August, when the sun shines an average of 10 hours 29 minutes a day.Least sunny months in Williamston: January, February and December receive an average of 6 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Williamston, 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 172 193 259 289 310 316 332 315 285 272 235 206
Mean daily daylight hours 10h 1m 10h 53m 11h 59m 13h 7m 14h 4m 14h 32m 14h 17m 13h 26m 12h 21m 11h 13m 10h 14m 9h 45m

Solar UV radiation in Williamston, North Carolina, United States §

Williamston 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 exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Williamston UV Index data.

Average daily maximum UV levels by month for Williamston, 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 6 8 10 11 11 11 10 9 8 5 3