nomadseason

Monthly climate in Harriston, Virginia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Harriston features a humid subtropical climate (Cfa).Temperatures typically range between 2 °C (35 °F) and 25 °C (77 °F) through the year, but rarely can drop to -21 °C (-5 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 1056 mm (41.6 inches) and receives 115 rainy days on the 1 mm (0.04 inches) threshold annually.Harriston enjoys an average of 3041 hours of sunshine throughout the year, and daylight varies from 9 hours 32 minutes to 14 hours 46 minutes per day.

Monthly average temperatures in Harriston, Virginia, United States §

The warmest months in Harriston are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (72 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 5 °C (35 - 40 °F) throughout the day. On average each year, Harriston experiences 108 days above 25 °C (77.0 °F) and 78 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Harriston, Virginia, 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 20°C
(69°F)		 25°C
(77°F)		 27°C
(80°F)		 32°C
(90°F)		 32°C
(90°F)		 34°C
(94°F)		 36°C
(98°F)		 36°C
(97°F)		 35°C
(95°F)		 34°C
(93°F)		 24°C
(76°F)		 21°C
(70°F)
Mean maximum 17°C
(64°F)		 21°C
(71°F)		 25°C
(77°F)		 29°C
(84°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(95°F)		 33°C
(92°F)		 32°C
(91°F)		 30°C
(86°F)		 23°C
(74°F)		 17°C
(63°F)
Average high 6°C
(44°F)		 10°C
(50°F)		 13°C
(56°F)		 19°C
(66°F)		 23°C
(75°F)		 27°C
(82°F)		 31°C
(88°F)		 29°C
(84°F)		 26°C
(79°F)		 21°C
(70°F)		 13°C
(55°F)		 9°C
(48°F)
Daily mean 2°C
(35°F)		 5°C
(40°F)		 7°C
(46°F)		 13°C
(55°F)		 18°C
(65°F)		 22°C
(72°F)		 25°C
(77°F)		 24°C
(75°F)		 21°C
(69°F)		 15°C
(60°F)		 7°C
(44°F)		 4°C
(39°F)
Average low -3°C
(27°F)		 -0°C
(32°F)		 2°C
(36°F)		 7°C
(45°F)		 13°C
(55°F)		 17°C
(62°F)		 20°C
(68°F)		 19°C
(66°F)		 16°C
(60°F)		 10°C
(50°F)		 1°C
(35°F)		 -1°C
(31°F)
Mean minimum -14°C
(7°F)		 -10°C
(14°F)		 -7°C
(20°F)		 -2°C
(29°F)		 2°C
(36°F)		 10°C
(51°F)		 15°C
(58°F)		 14°C
(57°F)		 8°C
(46°F)		 1°C
(33°F)		 -5°C
(23°F)		 -9°C
(17°F)
Minimum -21°C
(-5°F)		 -15°C
(5°F)		 -10°C
(14°F)		 -3°C
(26°F)		 -1°C
(31°F)		 7°C
(46°F)		 13°C
(55°F)		 12°C
(54°F)		 3°C
(38°F)		 -2°C
(28°F)		 -7°C
(20°F)		 -13°C
(10°F)

Compare climate in Harriston with other places

Compare temperature, precipitation, sunshine, UV index in Harriston, Virginia, United States with other places around the world.

Monthly average precipitation in Harriston, Virginia, United States §

Harriston usually has the most precipitation in April, May and August, with an average of 12 rainy days and 109 mm (4.3 inches) of precipitation per month.The driest months in Harriston are January, March and July. On average, 62 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Harriston, Virginia, 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) 60 (2.4) 87 (3.4) 67 (2.6) 108 (4.2) 110 (4.3) 89 (3.5) 59 (2.3) 108 (4.2) 102 (4.0) 106 (4.2) 76 (3.0) 84 (3.3)
Average precipitation days (≥ 1 mm) 7 10 10 11 13 11 8 12 9 9 7 8

Monthly sunshine hours in Harriston, Virginia, United States §

The sunniest months in Harriston are June, July and August, when the sun shines an average of 10 hours 35 minutes a day.Least sunny months in Harriston: 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 Harriston, Virginia, 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 152 181 255 261 283 311 353 309 267 247 224 192
Mean daily daylight hours 9h 50m 10h 46m 11h 58m 13h 12m 14h 15m 14h 46m 14h 29m 13h 33m 12h 22m 11h 9m 10h 4m 9h 32m

Solar UV radiation in Harriston, Virginia, United States §

Harriston experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, February 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 Harriston UV Index data.

Average daily maximum UV levels by month for Harriston, Virginia, 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) 3 5 7 9 11 10 10 10 9 7 5 3