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Monthly climate in New Castle, Virginia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification New Castle features a humid subtropical climate (Cfa).Temperatures typically range between 2 °C (35 °F) and 24 °C (75 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 1239 mm (48.8 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually.New Castle enjoys an average of 3009 hours of sunshine throughout the year, and daylight varies from 9 hours 36 minutes to 14 hours 41 minutes per day.

Monthly average temperatures in New Castle, Virginia, United States §

The warmest months in New Castle are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (70 - 75 °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 - 41 °F) throughout the day. On average each year, New Castle experiences 101 days above 25 °C (77.0 °F) and 79 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in New Castle, 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 21°C
(70°F)		 25°C
(77°F)		 29°C
(84°F)		 30°C
(87°F)		 31°C
(89°F)		 32°C
(91°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(93°F)		 33°C
(91°F)		 24°C
(75°F)		 19°C
(67°F)
Mean maximum 17°C
(64°F)		 21°C
(71°F)		 24°C
(76°F)		 28°C
(83°F)		 30°C
(86°F)		 31°C
(87°F)		 33°C
(92°F)		 32°C
(91°F)		 31°C
(89°F)		 29°C
(84°F)		 23°C
(74°F)		 18°C
(64°F)
Average high 6°C
(44°F)		 10°C
(50°F)		 13°C
(56°F)		 19°C
(66°F)		 23°C
(74°F)		 26°C
(80°F)		 29°C
(85°F)		 28°C
(83°F)		 25°C
(78°F)		 20°C
(69°F)		 12°C
(55°F)		 9°C
(48°F)
Daily mean 2°C
(35°F)		 5°C
(41°F)		 7°C
(46°F)		 12°C
(55°F)		 17°C
(64°F)		 21°C
(70°F)		 24°C
(75°F)		 23°C
(73°F)		 20°C
(68°F)		 15°C
(58°F)		 6°C
(44°F)		 4°C
(39°F)
Average low -3°C
(28°F)		 -0°C
(32°F)		 2°C
(36°F)		 7°C
(44°F)		 12°C
(54°F)		 16°C
(61°F)		 19°C
(66°F)		 18°C
(65°F)		 15°C
(59°F)		 9°C
(49°F)		 1°C
(34°F)		 -1°C
(31°F)
Mean minimum -14°C
(7°F)		 -11°C
(13°F)		 -7°C
(19°F)		 -2°C
(28°F)		 3°C
(37°F)		 10°C
(51°F)		 13°C
(56°F)		 13°C
(56°F)		 7°C
(45°F)		 0°C
(33°F)		 -6°C
(21°F)		 -11°C
(13°F)
Minimum -20°C
(-3°F)		 -16°C
(4°F)		 -12°C
(11°F)		 -4°C
(25°F)		 -1°C
(30°F)		 8°C
(47°F)		 12°C
(53°F)		 11°C
(52°F)		 3°C
(37°F)		 -3°C
(27°F)		 -9°C
(16°F)		 -16°C
(4°F)

Compare climate in New Castle with other places

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

Monthly average precipitation in New Castle, Virginia, United States §

New Castle usually has the most precipitation in April, May and June, with an average of 12 rainy days and 128 mm (5.0 inches) of precipitation per month.The driest months in New Castle are January, July and November. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in New Castle, 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) 73 (2.9) 111 (4.4) 82 (3.2) 120 (4.7) 147 (5.8) 117 (4.6) 78 (3.1) 109 (4.3) 114 (4.5) 114 (4.5) 75 (3.0) 98 (3.9)
Average precipitation days (≥ 1 mm) 9 11 12 12 13 12 9 12 9 10 8 8

Monthly sunshine hours in New Castle, Virginia, United States §

The sunniest months in New Castle are June, July and August, when the sun shines an average of 10 hours 38 minutes a day.Least sunny months in New Castle: January, February and December receive an average of 5 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in New Castle, 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 142 174 246 259 286 311 354 312 273 249 219 179
Mean daily daylight hours 9h 53m 10h 48m 11h 59m 13h 11m 14h 11m 14h 41m 14h 25m 13h 31m 12h 22m 11h 10m 10h 8m 9h 36m

Solar UV radiation in New Castle, Virginia, United States §

New Castle 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 New Castle UV Index data.

Average daily maximum UV levels by month for New Castle, 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 6 8 10 10 11 11 10 9 7 5 3