nomadseason

Monthly climate in New Castle, Indiana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification New Castle features a humid continental climate (Dfa).Temperatures typically range between -1 °C (30 °F) and 24 °C (76 °F) through the year, but rarely can drop to -27 °C (-17 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 1227 mm (48.3 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.New Castle enjoys an average of 2838 hours of sunshine throughout the year, and daylight varies from 9 hours 22 minutes to 14 hours 56 minutes per day.

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

The warmest months in New Castle are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (30 - 35 °F) throughout the day. On average each year, New Castle experiences 95 days above 25 °C (77.0 °F) and 94 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, Indiana, 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 18°C
(64°F)		 23°C
(74°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(91°F)		 33°C
(91°F)		 33°C
(92°F)		 33°C
(91°F)		 33°C
(91°F)		 32°C
(90°F)		 26°C
(78°F)		 17°C
(64°F)
Mean maximum 14°C
(58°F)		 17°C
(63°F)		 20°C
(69°F)		 26°C
(80°F)		 30°C
(86°F)		 32°C
(90°F)		 32°C
(90°F)		 31°C
(89°F)		 32°C
(89°F)		 29°C
(84°F)		 19°C
(67°F)		 16°C
(61°F)
Average high 2°C
(36°F)		 5°C
(41°F)		 10°C
(51°F)		 16°C
(61°F)		 22°C
(72°F)		 27°C
(81°F)		 29°C
(84°F)		 27°C
(81°F)		 26°C
(78°F)		 19°C
(66°F)		 9°C
(49°F)		 6°C
(43°F)
Daily mean -1°C
(30°F)		 0°C
(33°F)		 5°C
(42°F)		 11°C
(51°F)		 17°C
(64°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(73°F)		 20°C
(69°F)		 14°C
(57°F)		 5°C
(41°F)		 2°C
(35°F)
Average low -5°C
(23°F)		 -4°C
(26°F)		 1°C
(34°F)		 6°C
(43°F)		 13°C
(55°F)		 18°C
(64°F)		 20°C
(68°F)		 18°C
(65°F)		 15°C
(60°F)		 9°C
(49°F)		 1°C
(34°F)		 -2°C
(28°F)
Mean minimum -19°C
(-1°F)		 -16°C
(4°F)		 -9°C
(16°F)		 -4°C
(25°F)		 2°C
(37°F)		 12°C
(53°F)		 14°C
(58°F)		 12°C
(54°F)		 8°C
(46°F)		 -0°C
(32°F)		 -8°C
(18°F)		 -13°C
(8°F)
Minimum -27°C
(-17°F)		 -21°C
(-5°F)		 -15°C
(6°F)		 -6°C
(21°F)		 -1°C
(30°F)		 8°C
(47°F)		 14°C
(57°F)		 11°C
(52°F)		 5°C
(41°F)		 -1°C
(30°F)		 -16°C
(4°F)		 -23°C
(-10°F)

Compare climate in New Castle with other places

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

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

New Castle usually has the most precipitation in March, May and June, with an average of 13 rainy days and 126 mm (5.0 inches) of precipitation per month.The driest months in New Castle are January, September and December. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in New Castle, Indiana, 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) 78 (3.1) 99 (3.9) 120 (4.7) 99 (3.9) 140 (5.5) 120 (4.7) 112 (4.4) 93 (3.7) 89 (3.5) 101 (4.0) 93 (3.7) 81 (3.2)
Average precipitation days (≥ 1 mm) 9 12 13 11 15 13 12 12 7 12 9 11

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

The sunniest months in New Castle are June, July and August, when the sun shines an average of 10 hours 41 minutes a day.Least sunny months in New Castle: January, February and December receive an average of 4 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in New Castle, Indiana, 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 114 157 216 230 272 318 345 319 281 230 187 163
Mean daily daylight hours 9h 41m 10h 41m 11h 58m 13h 17m 14h 23m 14h 56m 14h 38m 13h 39m 12h 23m 11h 5m 9h 57m 9h 22m

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

New Castle experiences the highest level of ultraviolet (UV) radiation in May, 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 4. For more detailed information, check out our hourly New Castle UV Index data.

Average daily maximum UV levels by month for New Castle, Indiana, 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 6 9 10 11 10 9 8 6 4 3