Wilmington, DE: December

31 December 2025: December 2025 averaged 33.5°F in Wilmington, DE, the coldest December since 2010, 26th coldest of 111.

December 2025

Mean temperature: 33.5°F; Coldest since 2010; 26th coldest of 111
Precipitation: 3.27 in; Driest since 2021; 58th driest of 118

A normal December in Wilmington, DE (1991 to 2020): a mean temperature of 38.1°F, between 33.5°F and 41.7°F in eight years of ten and 3.72 in of precipitation, between 1.95 in and 5.38 in in eight years of ten.

The mean temperature of every December in Wilmington, DE since 1894: 33.5°F in 2025; the lowest is 25°F, in 1989.

Normal range, 33.5 to 41.7°F

Every year, ranked, as a table

Every December in Wilmington, DE from 1894 to 2025, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2025	33.5	86	41.8	79	25.2	87	3.27	61	0
2024	37.5	44	45.9	41	29.1	50	3.34	60	0
2023	41.8	9	49.7	12	33.9	5	7.98	2	0
2022	37.3	50	46.7	32	27.8	65	5.18	20	0
2021	43.2	2	51.5	2	34.8	4	1.11	111	0
2020	37.6	40	45.7	45	29.5	44	5.16	21	0
2019	38.5	30	46.5	36	30.5	30	4.68	30	0
2018	39.4	20	47.6	21	31.2	21	6.85	7	0
2017	34.8	72	42.8	70	26.8	75	1.23	109	0
2016	37.9	36	46	39	29.8	38	2.59	76	0
2015	49.4	1	57.1	1	41.6	1	5.21	19	0
2014	40.1	17	47	27	33.1	10	3.01	67	0
2013	37.6	40	45.8	42	29.3	48	5.22	18	0
2012	42.2	4	49.5	13	35	3	3.92	45	0
2011	41.3	12	50.8	6	31.9	18	4.44	32	0
2010	31.6	95	38.6	98	24.5	90	2.41	84	0
2009	35.4	67	42.5	75	28.2	57	8.58	1	0
2008	38.2	32	46.6	34	29.8	38	4.39	33	0
2007	37.6	40	44.4	59	30.8	25	4.82	26	0
2006	41.6	10	50.8	6	32.3	17	1.93	96	0
2005	33.7	84	41.1	90	26.3	80	3.22	62	0
2004	36.6	59	45.1	50	28.2	57	2.84	72	0
2003	35.8	65	43.5	65	28.1	59	4.93	23	0
2002	34.3	76	41.6	82	26.9	74	4.50	31	0
2001	42.5	3	51.2	3	33.8	7	1.95	93	0
2000	30	103	37.5	105	22.6	103	2.80	73	0
1999	38.8	25	46.7	32	30.8	25	2.94	69	0
1998	41	15	49.4	15	32.5	13	1.01	112	0
1997	37.5	44	45.4	47	29.7	40	2.57	77	0
1996	39.2	22	45.8	42	32.5	13	7.96	3	0
1995	31.3	97	37.9	104	24.7	89	2.17	90	0
1994	40	19	48.7	16	31.2	21	2.24	89	0
1993	36.4	61	44.1	62	28.6	54	3.51	54	0
1992	38.3	31	45.6	46	31	23	4.21	36	0
1991	39.4	20	48	17	30.9	24	4.26	35	0
1990	41	15	50.6	8	31.3	20	5.16	21	0
1989	25	111	32.5	111	17.5	111	1.27	107	0
1988	35	70	44.2	61	25.9	84	0.90	113	0
1987	38.6	28	46.6	34	30.6	29	1.90	97	0
1986	37.3	50	44.9	52	29.7	40	6.11	10	0
1985	32.9	91	41.5	85	24.2	93	0.80	116	0
1984	42.1	5	51	5	33.2	9	1.94	95	0
1983	32.1	94	40.8	92	23.4	98	6.80	8	0
1982	41.3	12	50.1	10	32.5	13	2.39	85	0
1981	34.2	77	41.6	82	26.8	75	3.95	42	0
1980	33.1	89	41.9	78	24.3	92	0.83	114	0
1979	38.1	33	47.1	26	29	51	1.44	104	0
1978	37.2	52	46.9	28	27.5	71	5.56	14	0
1977	33.3	87	41.3	86	25.4	85	5.81	12	0
1976	31	99	39.2	96	22.7	102	1.79	101	0
1975	36.2	62	44.6	55	27.7	67	3.00	68	0
1974	38.8	25	47.3	24	30.4	31	4.18	37	0
1973	37.7	38	45.8	42	29.5	44	7.31	6	0
1972	41.6	10	47.8	20	35.3	2	5.99	11	0
1971	42.1	5	50.4	9	33.8	7	1.33	106	0
1970	35.9	64	43.2	67	28.6	54	3.02	66	0
1969	32.7	92	39.4	95	26	82	7.90	4	0
1968	34.2	77	41.6	82	26.7	78	2.33	86	0
1967	36.8	58	44.6	55	28.9	52	5.24	17	0
1966	34.8	72	42.7	72	26.8	75	3.81	48	0
1965	37.7	38	46.8	31	28.5	56	1.54	102	0
1964	37.2	52	44.9	52	29.6	43	4.70	29	0
1963	28.3	108	35.9	108	20.8	107	1.85	99	0
1962	30.2	101	38.4	99	22.1	104	2.50	81	0
1961	33.2	88	41.2	89	25.2	87	3.03	65	0
1960	28.3	108	38.1	102	18.6	110	2.67	74	0
1959	38	35	46	39	29.9	36	3.46	57	0
1958	28.5	107	37.3	106	19.8	108	1.25	108	0
1957	37.8	37	45.4	47	30.3	32	4.74	28	0
1956	41.3	12	49.5	13	33	11	4.09	40	0
1955	29.8	105	38.1	102	21.6	106	0.19	118	0
1954	35.1	69	42.6	73	27.6	69	3.14	64	0
1953	38.6	28	47.9	18	29.4	47	4.13	39	0
1952	37.4	48	44.5	58	30.3	32	3.61	53	0
1951	37.6	40	46.5	36	28.7	53	5.79	13	0
1950	32.4	93	41	91	23.8	94	1.95	93	0
1949	37.5	44	46.9	28	28.1	59	2.90	71	0
1948	36.2	62	44.6	55	27.8	65	5.25	16	0
1947	33.1	89	41.3	86	24.5	90	1.80	100	2
1946	37.5	44	46.9	28	28	63	2.25	88	0
1945	30	103	36.5	107	23.6	95	4.04	41	0
1944	31.6	95	40.2	94	23	101	3.35	59	0
1943	33.6	85	44	63	23.3	99	1.45	103	0
1942	31.3	97	39	97	23.6	95	4.37	34	0
1941	38.8	25	47.6	21	29.9	36	3.78	50	0
1940	39	24	47.2	25	30.7	28	2.62	75	0
1939	36.5	60	44.7	54	28	63	1.90	97	3
1938	35.7	66	43.4	66	28.1	59	3.48	56	0
1937	34.2	77	41.8	79	26.7	78	1.38	105	0
1936	38.1	33	46.2	38	30.2	34	5.46	15	1
1935	29.6	106	35.8	109	23.5	97	2.53	78	0
1934	33.9	83	42.3	76	26	82			2
1933	34.1	81	42.8	70	25.4	85			0
1932	37.1	54	45	51	29.2	49			0
1931	42.1	5	51.2	3	33	11	2.32	87	0
1930	34.2	77	41.3	86	27.2	72	2.45	83	0
1929	35.4	67	43.1	68	27.7	67	3.84	46	0
1928	37.4	48	45.3	49	29.5	44			0
1927	37	55	44.4	59	29.7	40	4.87	25	0
1926	30.6	100	38.2	101	23.1	100	3.19	63	2
1925	34.9	71	41.7	81	28.1	59	1.14	110	0
1924	34.4	75	42.6	73	26.3	80			0
1923	41.9	8	49.8	11	33.9	5	4.90	24	0
1922	34	82	40.5	93	27.6	69	2.94	69	0
1921	34.5	74	42	77	27.1	73			0
1920	36.9	57	43	69	30.8	25			0
1919	30.1	102	38.4	99	21.8	105	3.50	55	0
1918	40.1	17	47.9	18	32.4	16	3.94	44	0
1917	26.7	110	34	110	19.4	109	2.03	92	1
1916							4.78	27	31
1915							3.72	52	31
1913							2.53	78	31
1911							3.95	42	31
1910							2.53	78	31
1908							3.79	49	31
1905							4.16	38	31
1903							3.73	51	31
1902							6.42	9	31
1901							7.60	5	31
1900							2.50	81	31
1899							0.81	115	31
1898							3.84	46	31
1897							3.45	58	31
1896							0.47	117	15
1895	39.1	23	47.4	23	31.6	19	2.16	91	2
1894	37	55	43.8	64	30.2	34			0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	49.4
2021	43.2
2001	42.5
2012	42.2
1984	42.1
1971	42.1
1931	42.1
1923	41.9
2023	41.8
2006	41.6
More years share the last value

Coldest
Year	Mean, °F
1989	25
1917	26.7
1963	28.3
1960	28.3
1958	28.5
1935	29.6
1955	29.8
2000	30
1945	30
1919	30.1

Wettest
Year	Precipitation, in
2009	8.58
2023	7.98
1996	7.96
1969	7.90
1901	7.60
1973	7.31
2018	6.85
1983	6.80
1902	6.42
1986	6.11

Driest
Year	Precipitation, in
1955	0.19
1896	0.47
1985	0.80
1899	0.81
1980	0.83
1988	0.90
1998	1.01
2021	1.11
1925	1.14
2017	1.23

The hottest, coldest and wettest days

Hottest day: 58°F; 19 December 2025
Coldest night: 13°F; 16 December 2025
Wettest day: 1.38 in; 19 December 2025

Every month, season and year

Months

Seasons

Years

Wilmington, DE the day's answers

All-time records

Every answer in words

December 2025 brought 3.27 in of precipitation in Wilmington, DE, the driest December since 2021, 58th driest of 118.
The hottest day of December 2025 in Wilmington, DE: 58°F on Friday 19 December 2025.
The coldest night of December 2025 in Wilmington, DE: a low of 13°F on Tuesday 16 December 2025.
The wettest day of December 2025 in Wilmington, DE: 1.38 in on Friday 19 December 2025.