Annual precipitation in New Castle County

Annual precipitation in New Castle County was 38.36 inches in 2025, according to NOAA National Centers for Environmental Information. That is down 4.9% from 2024.

2025, inches38.36

Change on 2024-4.9%

Series high64.292018

Series low27.551965

Next release: Wednesday, 6 October 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Annual precipitation in New Castle County, 1950 to 2025

inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12, published 2026-10-06.

All 76 values

Period	inches
2025	38.36
2024	40.33
2023	45.6
2022	42.58
2021	38.94
2020	53.01
2019	44.45
2018	64.29
2017	41.34
2016	40.42
2015	46.97
2014	47.75
2013	48.84
2012	38.38
2011	56.04
2010	44.42
2009	53.68
2008	42.23
2007	42.8
2006	49.09
2005	43.95
2004	53.75
2003	59.26
2002	43.55
2001	35.5
2000	46.05
1999	48.85
1998	36.83
1997	35.6
1996	57.97
1995	39.66
1994	45.04
1993	46.05
1992	39.03
1991	39.6
1990	46.01
1989	54.2
1988	40.51
1987	36.94
1986	41.08
1985	37.11
1984	44.74
1983	55.6
1982	41.13
1981	36.42
1980	35.76
1979	54.45
1978	46.82
1977	44.32
1976	36.55
1975	54.1
1974	41.66
1973	50.51
1972	53.23
1971	55.13
1970	39.11
1969	40.96
1968	34.87
1967	44.56
1966	38.69
1965	27.55
1964	34.35
1963	33.87
1962	37.87
1961	41.24
1960	45.59
1959	40.68
1958	52.21
1957	37.41
1956	46.34
1955	38.55
1954	33.89
1953	46.14
1952	51.41
1951	44.39
1950	41.38

Compared with Delaware and United States

Place	2025
New Castle County	38.36
Delaware	40.26
United States	29.26

New Castle County compared with nearby places

Under 39
39 to 40
40 and over

Annual precipitation, 2025, inches. New Castle County is outlined. Same source and period for every area shown. Source: NOAA National Centers for Environmental Information. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

US states by annual precipitation 50 places

Definition

Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.

Values are area averages, not the reading at one weather station. NOAA revises the last two years every month.

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How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December precipitation, counties (Annual precipitation, New Castle County, 1950 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping

MLA 9

NOAA Climate at a Glance, January to December precipitation, counties, Annual precipitation, New Castle County, 1950 to 2025. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Invokely, https://invokely.ai/en/annual-precipitation/new-castle-county-delaware. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Annual precipitation, New Castle County, 1950 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Also distributed by Invokely, https://invokely.ai/en/annual-precipitation/new-castle-county-delaware.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Annual precipitation, New Castle County, 1950 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/en/annual-precipitation/new-castle-county-delaware (Accessed: 12 October 2026).

BibTeX

@misc{noaa_annual_precipitation_new_castle_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Annual precipitation, New Castle County, 1950 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/annual-precipitation/new-castle-county-delaware. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December precipitation, counties: Annual precipitation, New Castle County, 1950 to 2025
PY  - 2026
DA  - 2026/10/06
PB  - NOAA National Centers for Environmental Information
DB  - Invokely
UR  - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping
L2  - https://invokely.ai/en/annual-precipitation/new-castle-county-delaware
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/annual-precipitation/new-castle-county-delaware.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
ER  -

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Questions

What is the annual precipitation in New Castle County?

Annual precipitation in New Castle County was 38.36 inches in 2025, according to NOAA National Centers for Environmental Information. That is down 4.9% from 2024.

Where does this figure come from?

NOAA National Centers for Environmental Information. NOAA Climate at a Glance, January to December precipitation, counties. Retrieved by Invokely on 2026-10-12.

What was the highest annual precipitation in New Castle County?

64.29 inches in 2018, the highest value since 1950 in this series.

Related statistics for New Castle County

All statistics for New Castle County | New Castle County in figures