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Monthly climate in Alderson, West Virginia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Alderson features a oceanic climate (Cfb).Temperatures typically range between 0 °C (33 °F) and 22 °C (72 °F) through the year, but rarely can drop to -21 °C (-6 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 1216 mm (47.9 inches) and receives 148 rainy days on the 1 mm (0.04 inches) threshold annually.Alderson enjoys an average of 3001 hours of sunshine throughout the year, and daylight varies from 9 hours 35 minutes to 14 hours 43 minutes per day.

Monthly average temperatures in Alderson, West Virginia, United States §

The warmest months in Alderson are June, July and August, with daily mean temperatures ranging from 20 to 22 °C (68 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 39 °F) throughout the day. On average each year, Alderson experiences 78 days above 25 °C (77.0 °F) and 89 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Alderson, West 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 19°C
(66°F)		 24°C
(76°F)		 28°C
(83°F)		 30°C
(85°F)		 29°C
(85°F)		 32°C
(89°F)		 31°C
(89°F)		 33°C
(91°F)		 32°C
(90°F)		 31°C
(89°F)		 23°C
(75°F)		 19°C
(67°F)
Mean maximum 16°C
(62°F)		 20°C
(68°F)		 23°C
(74°F)		 27°C
(80°F)		 28°C
(82°F)		 29°C
(85°F)		 31°C
(88°F)		 30°C
(87°F)		 29°C
(85°F)		 28°C
(82°F)		 22°C
(72°F)		 17°C
(63°F)
Average high 5°C
(41°F)		 9°C
(48°F)		 12°C
(53°F)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(76°F)		 28°C
(82°F)		 26°C
(80°F)		 24°C
(76°F)		 19°C
(66°F)		 11°C
(52°F)		 7°C
(46°F)
Daily mean 0°C
(33°F)		 3°C
(39°F)		 6°C
(44°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(68°F)		 22°C
(72°F)		 21°C
(71°F)		 19°C
(66°F)		 13°C
(56°F)		 5°C
(42°F)		 3°C
(38°F)
Average low -3°C
(26°F)		 -1°C
(30°F)		 1°C
(34°F)		 6°C
(42°F)		 11°C
(53°F)		 15°C
(59°F)		 18°C
(64°F)		 17°C
(63°F)		 14°C
(58°F)		 8°C
(47°F)		 1°C
(33°F)		 -1°C
(30°F)
Mean minimum -16°C
(3°F)		 -13°C
(8°F)		 -9°C
(15°F)		 -4°C
(26°F)		 2°C
(36°F)		 9°C
(48°F)		 12°C
(54°F)		 12°C
(54°F)		 7°C
(44°F)		 -1°C
(31°F)		 -7°C
(19°F)		 -12°C
(10°F)
Minimum -21°C
(-6°F)		 -18°C
(0°F)		 -12°C
(10°F)		 -6°C
(22°F)		 -2°C
(30°F)		 6°C
(44°F)		 11°C
(52°F)		 10°C
(50°F)		 3°C
(37°F)		 -3°C
(26°F)		 -12°C
(11°F)		 -17°C
(1°F)

Compare climate in Alderson with other places

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

Monthly average precipitation in Alderson, West Virginia, United States §

Alderson usually has the most precipitation in February, April and May, with an average of 14 rainy days and 136 mm (5.3 inches) of precipitation per month.The driest months in Alderson are January, July and November. On average, 75 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alderson, West 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) 81 (3.2) 142 (5.6) 104 (4.1) 128 (5.0) 137 (5.4) 97 (3.8) 74 (2.9) 85 (3.3) 86 (3.4) 114 (4.5) 69 (2.7) 98 (3.9)
Average precipitation days (≥ 1 mm) 12 14 15 14 16 14 12 13 10 9 9 10

Monthly sunshine hours in Alderson, West Virginia, United States §

The sunniest months in Alderson are June, July and August, when the sun shines an average of 10 hours 45 minutes a day.Least sunny months in Alderson: January, February and December receive an average of 5 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alderson, West 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 135 164 241 252 294 313 356 319 284 253 216 169
Mean daily daylight hours 9h 52m 10h 48m 11h 58m 13h 11m 14h 12m 14h 43m 14h 26m 13h 32m 12h 22m 11h 10m 10h 7m 9h 35m

Solar UV radiation in Alderson, West Virginia, United States §

Alderson 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 Alderson UV Index data.

Average daily maximum UV levels by month for Alderson, West 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) 4 6 8 10 11 11 11 10 9 7 5 3