Wilmington New Castle Co AP Threshold Days by Year (USW00013781)

18 fixed thresholds counted per year at Wilmington New Castle Co AP (USW00013781): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wilmington New Castle Co AP Thresholds

Wilmington New Castle Co AP: days with a maximum temperature at or above 30 C (86 F) in 81 years, most in 2010 with 79.
Wilmington New Castle Co AP: days with a maximum temperature at or above 90 F (32.2 C) in 81 years, most in 2010 with 44.
Wilmington New Castle Co AP: days with a maximum temperature at or below 0 C (32 F) in 81 years, most in 1978 with 39.
Wilmington New Castle Co AP: nights with a minimum temperature at or below 0 C (32 F) in 81 years, most in 1960 with 117.
18 fixed thresholds have at least one qualifying day at Wilmington New Castle Co AP.

Days at or above 30 C (86 F)

81 years with a qualifying day

Days per year at Wilmington New Castle Co AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2010.

Days at or above 30 C (86 F) per year at Wilmington New Castle Co AP
Year	Days	Decade average
1932	57	49
1933	41	49
1948	40	44.5
1949	49	44.5
1950	33	50.2
1951	54	50.2
1952	54	50.2
1953	58	50.2
1954	51	50.2
1955	59	50.2
1956	43	50.2
1957	62	50.2
1958	34	50.2
1959	54	50.2
1960	26	39.8
1961	43	39.8
1962	40	39.8
1963	37	39.8
1964	46	39.8
1965	42	39.8
1966	56	39.8
1967	20	39.8
1968	43	39.8
1969	45	39.8
1970	60	43.1
1971	40	43.1
1972	42	43.1
1973	59	43.1
1974	46	43.1
1975	35	43.1
1976	36	43.1
1977	44	43.1
1978	36	43.1
1979	33	43.1
1980	66	49.3
1981	40	49.3
1982	44	49.3
1983	59	49.3
1984	36	49.3
1985	52	49.3
1986	48	49.3
1987	55	49.3
1988	58	49.3
1989	35	49.3
1990	45	49.6
1991	66	49.6
1992	33	49.6
1993	65	49.6
1994	58	49.6
1995	58	49.6
1996	28	49.6
1997	39	49.6
1998	53	49.6
1999	51	49.6
2000	28	41.5
2001	33	41.5
2002	55	41.5
2003	33	41.5
2004	21	41.5
2005	57	41.5
2006	43	41.5
2007	61	41.5
2008	50	41.5
2009	34	41.5
2010	79	59.2
2011	59	59.2
2012	58	59.2
2013	49	59.2
2014	32	59.2
2015	56	59.2
2016	68	59.2
2017	56	59.2
2018	59	59.2
2019	76	59.2
2020	57	59.7
2021	60	59.7
2022	67	59.7
2023	60	59.7
2024	52	59.7
2025	53	59.7
2026	69	59.7

For each year, a bar from the first to the last day at Wilmington New Castle Co AP meeting 30 C (86 F).

First to last qualifying date each year at Wilmington New Castle Co AP
Year	First date	Last date
1932	1932-05-25	1932-09-23
1933	1933-05-20	1933-09-25
1948	1948-03-21	1948-09-20
1949	1949-05-06	1949-10-11
1950	1950-06-06	1950-09-02
1951	1951-05-16	1951-10-05
1952	1952-06-06	1952-10-02
1953	1953-05-11	1953-09-30
1954	1954-05-02	1954-10-13
1955	1955-05-05	1955-09-20
1956	1956-05-13	1956-09-23
1957	1957-04-21	1957-09-22
1958	1958-06-09	1958-09-26
1959	1959-05-07	1959-10-06
1960	1960-04-23	1960-09-09
1961	1961-06-02	1961-09-24
1962	1962-05-15	1962-09-14
1963	1963-04-03	1963-09-12
1964	1964-05-08	1964-09-23
1965	1965-05-04	1965-09-23
1966	1966-05-06	1966-09-04
1967	1967-06-10	1967-10-05
1968	1968-06-06	1968-09-25
1969	1969-04-27	1969-09-17
1970	1970-05-09	1970-09-26
1971	1971-06-07	1971-09-10
1972	1972-05-24	1972-09-26
1973	1973-04-23	1973-09-07
1974	1974-04-29	1974-09-13
1975	1975-05-24	1975-10-15
1976	1976-04-17	1976-09-14
1977	1977-04-12	1977-09-19
1978	1978-05-20	1978-09-18
1979	1979-05-09	1979-09-06
1980	1980-05-05	1980-09-23
1981	1981-05-25	1981-09-14
1982	1982-05-31	1982-09-12
1983	1983-06-11	1983-09-20
1984	1984-05-22	1984-09-03
1985	1985-04-19	1985-09-10
1986	1986-05-06	1986-09-30
1987	1987-05-10	1987-08-20
1988	1988-05-29	1988-08-27
1989	1989-05-26	1989-09-21
1990	1990-04-26	1990-09-11
1991	1991-04-08	1991-09-17
1992	1992-05-22	1992-09-22
1993	1993-05-10	1993-09-15
1994	1994-04-25	1994-09-17
1995	1995-05-25	1995-09-14
1996	1996-05-19	1996-09-10
1997	1997-05-19	1997-10-06
1998	1998-03-30	1998-09-27
1999	1999-05-29	1999-08-29
2000	2000-05-05	2000-09-04
2001	2001-05-03	2001-08-28
2002	2002-04-16	2002-10-03
2003	2003-04-16	2003-08-30
2004	2004-05-11	2004-09-23
2005	2005-06-05	2005-09-23
2006	2006-05-29	2006-08-25
2007	2007-05-26	2007-10-09
2008	2008-06-07	2008-09-14
2009	2009-04-25	2009-09-05
2010	2010-04-06	2010-09-25
2011	2011-05-24	2011-09-14
2012	2012-04-16	2012-09-08
2013	2013-04-10	2013-10-05
2014	2014-05-27	2014-09-11
2015	2015-05-18	2015-09-16
2016	2016-05-25	2016-10-19
2017	2017-04-16	2017-10-07
2018	2018-05-02	2018-10-04
2019	2019-05-20	2019-10-02
2020	2020-06-03	2020-09-04
2021	2021-04-28	2021-09-18
2022	2022-05-21	2022-09-19
2023	2023-04-13	2023-09-09
2024	2024-04-29	2024-09-19
2025	2025-05-17	2025-09-28
2026	2026-04-14	2026-10-02

Every Fixed Threshold

Fixed thresholds at Wilmington New Castle Co AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	81	79	2010	69
35 C (95 F): Days	66	14	2010	9
90 F (32.2 C): Days	81	44	2010	30
100 F (37.8 C): Days	17	5	1953	3
0 C (32 F): Ice days (max	81	39	1978	14
0 C (32 F): Frost days (min	81	117	1960	62
-10 C (14 F): Days with min	79	32	1977	15
-20 C (-4 F): Days with min	8	3	1984	1
20 C (68 F): Tropical nights (min	81	71	2018	59
25 C (77 F): Days with min	35	6	2016	2
10 mm (0.39 in): Days with 10 mm or more rain	79	57	2018	28
25 mm (0.98 in): Days with 25 mm or more rain	79	23	1983	8
50 mm (1.97 in): Days with 50 mm or more rain	73	5	2023	3
100 mm (3.94 in): Days with 100 mm or more rain	11	1	1952	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1999	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	6	2010	2
25 cm (9.8 in): Days with 25 cm or more snowfall	16	2	1987	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1932.

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Data for Wilmington New Castle Co AP threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Wilmington New Castle Co AP Threshold Days by Year (USW00013781)

Key Facts for Wilmington New Castle Co AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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