Wilmington, DE: May

31 May 2026: May 2026 averaged 64.3°F in Wilmington, DE, the warmest May since 2025, tied 36th warmest of 113 (with 1964).

May 2026

Mean temperature: 64.3°F; Warmest since 2025; 36th warmest of 113
Precipitation: 3.33 in; Driest since 2024; 63rd driest of 127

A normal May in Wilmington, DE (1991 to 2020): a mean temperature of 63.2°F, between 59.9°F and 67.5°F in eight years of ten and 3.45 in of precipitation, between 2.14 in and 5.37 in in eight years of ten.

The mean temperature of every May in Wilmington, DE since 1894: 64.3°F in 2026; the highest is 70.1°F, in 1896.

Normal range, 59.9 to 67.5°F

Every year, ranked, as a table

Every May in Wilmington, DE from 1894 to 2026, 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
2026	64.3	36	74.8	38	53.8	31	3.33	64	0
2025	64.5	35	73.5	54	55.6	13	6.73	8	0
2024	65.3	20	74.2	45	56.4	9	2.17	100	0
2023	62.7	55	74.9	36	50.5	83	0.20	127	0
2022	65.8	14	75.4	31	56.2	10	2.96	76	0
2021	62.7	55	74	48	51.4	69	3.03	75	0
2020	60.3	90	70.1	97	50.6	80	2.45	84	0
2019	66.2	10	75	33	57.4	6	4.97	31	0
2018	67.4	5	77.5	9	57.4	6	5.68	16	0
2017	61.9	67	70.9	87	52.9	43	5.86	14	0
2016	61.8	69	70.1	97	53.5	36	7.30	3	0
2015	68.1	4	78.5	4	57.7	3	2.39	87	0
2014	64.2	38	74.3	44	54.1	28	3.09	74	0
2013	63.7	45	73.8	50	53.5	36	2.16	101	0
2012	67	7	76.4	19	57.7	3	2.25	95	0
2011	66.2	10	76	24	56.5	8	3.23	68	0
2010	65.5	18	75.4	31	55.7	12	2.32	91	0
2009	63.4	48	73	60	53.8	31	3.89	49	0
2008	60.1	95	71	84	49.3	98	5.12	25	0
2007	64.8	30	76.4	19	53.2	41	1.02	119	0
2006	62.7	55	73.8	50	51.5	67	2.22	97	0
2005	57.5	111	68.2	109	46.8	111	2.26	94	0
2004	68.2	3	77.2	12	59.2	1	4.41	40	0
2003	58.1	108	65.9	111	50.3	86	3.92	47	0
2002	61.4	74	72.1	70	50.7	76	3.40	61	0
2001	62.7	55	72.6	65	52.7	45	5.33	22	0
2000	63.8	43	73.3	56	54.3	24	2.94	77	0
1999	62.9	51	73.8	50	52	55	3.56	57	0
1998	65.3	20	74.6	42	55.9	11	4.13	41	0
1997	58.6	107	68.9	107	48.3	106	0.82	123	0
1996	60.1	95	69.5	102	50.6	80	3.27	67	0
1995	62.2	62	72.7	64	51.7	61	3.49	60	0
1994	60	98	71.4	78	48.5	104	3.69	55	0
1993	65.2	22	75.9	26	54.6	21	3.95	46	0
1992	60.6	85	71	84	50.3	86	4.48	39	0
1991	69.1	2	80.7	2	57.5	5	1.98	107	0
1990	61.5	73	70.7	91	52.3	53	7.03	6	0
1989	62.1	64	71.6	75	52.6	49	6.57	10	0
1988	62.9	51	72.3	67	53.5	36	4.95	32	0
1987	63	50	73.3	56	52.8	44	3.15	70	0
1986	65.7	15	76.8	15	54.6	21	1.69	110	0
1985	65.9	13	76.7	17	55	18	5.52	20	0
1984	61.1	77	71.2	81	51.1	72	5.03	29	0
1983	61	79	71.8	73	50.2	90	7.38	1	0
1982	65	26	75.8	27	54.2	27	3.72	54	0
1981	62.4	60	73.5	54	51.4	69	5.05	27	0
1980	64.9	28	75.7	28	54.1	28	2.40	86	0
1979	63.7	45	73.2	58	54.3	24	3.10	73	0
1978	60.2	92	69.4	103	51.1	72	6.94	7	0
1977	63.9	42	75	33	52.7	45	0.96	120	0
1976	59.9	100	69.7	99	50	95	5.05	27	0
1975	65.2	22	74.9	36	55.5	14	5.65	17	0
1974	62.4	60	72.8	63	52	55	3.96	45	0
1973	61.4	74	70.3	95	52.5	51	5.56	19	0
1972	62.5	59	72.9	61	52	55	3.85	51	0
1971	60.4	89	70.3	95	50.4	85	4.51	38	0
1970	64.8	30	76	24	53.6	33	0.94	121	0
1969	64.1	40	74.7	41	53.6	33	3.21	69	0
1968	59.6	103	69.1	104	50.1	92	4.78	35	0
1967	55.4	113	64.9	113	45.8	112	3.79	53	0
1966	60.2	92	70.4	93	50.1	92	3.35	63	0
1965	66	12	77.1	13	54.8	20	1.41	113	0
1964	64.3	36	76.1	23	52.5	51	0.22	126	0
1963	60.3	90	72.2	69	48.4	105	1.23	116	0
1962	64.1	40	75	33	53.3	40	1.61	111	0
1961	58.9	104	69	106	48.8	101	2.45	84	0
1960	60.6	85	70.8	88	50.3	86	5.12	25	0
1959	65.6	16	76.8	15	54.3	24	1.34	115	0
1958	60.7	84	70.4	93	51	74	3.89	49	0
1957	62.9	51	74.2	45	51.6	65	2.36	89	0
1956	59.9	100	71.9	72	47.9	108	2.12	103	0
1955	64.7	32	76.4	19	53.1	42	1.18	118	0
1954	60.6	85	70.8	88	50.3	86	2.38	88	0
1953	65	26	74.5	43	55.5	14	5.39	21	0
1952	61	79	71.4	78	50.7	76	4.61	36	0
1951	61.9	67	73.7	53	50.1	92	3.56	57	0
1950	60	98	69.6	100	50.5	83	3.32	66	0
1949	62.9	51	74.1	47	51.7	61	4.10	42	0
1948	61.4	74	71	84	51.7	61	7.35	2	0
1947	60.9	81	71.1	83	50.7	76	7.24	4	0
1946	61.6	72	71.4	78	51.9	58	7.12	5	0
1945	60.1	95	71.6	75	48.7	102	5.17	24	0
1944	67.3	6	79.7	3	54.9	19	2.31	93	0
1943	63.4	48	74.8	38	51.9	58			0
1942	65.6	16	77.6	8	53.6	33	2.49	83	0
1941	64.9	28	78.1	6	51.7	61	1.42	112	0
1940	60.6	85	71.8	73	49.3	98	4.88	33	0
1939	63.5	47	76.3	22	51.5	67	0.35	125	2
1938	60.9	81	71.2	81	50.6	80	4.05	43	0
1937	63.8	43	75.7	28	51.9	58			0
1936	65.1	25	77.5	9	52.7	45			0
1935	58.7	106	69.6	100	48	107	3.40	61	2
1934	64.2	38	75.6	30	52.7	45			0
1933	64.7	32	74.8	38	54.6	21	6.16	11	0
1932	62	65	72.9	61	51	74	4.02	44	1
1931	61.7	70	72	71	51.4	69	4.55	37	0
1930	64.7	32	77.1	13	52.3	53	3.15	70	0
1929	60.9	81	71.6	75	50.2	90	2.75	79	0
1928	60.2	92	70.8	88	49.5	96	2.23	96	1
1927	59.9	100	69.1	104	50.7	76	2.32	91	0
1926	61.1	77	73.1	59	49.1	100	3.51	59	0
1925	58.9	104	70.7	91	47	110	1.85	109	0
1924	58.1	108	67.6	110	48.6	103	6.08	12	0
1923	61.7	70	74	48	49.4	97	2.19	99	0
1922	65.2	22	76.5	18	53.9	30	2.21	98	0
1921	62	65	72.4	66	51.6	65	3.33	64	0
1920	58.1	108	68.6	108	47.7	109	2.90	78	0
1919	62.2	62	72.3	67	52.6	49	6.72	9	1
1918	66.8	8	78.3	5	55.4	16	3.80	52	0
1917	55.8	112	65.7	112	45.8	112	3.15	70	1
1916							2.62	81	31
1915							4.88	33	31
1914							0.89	122	31
1913							5.78	15	31
1912							3.90	48	31
1911							1.22	117	31
1910							1.93	108	31
1909							2.06	105	31
1908							5.95	13	31
1907							5.63	18	31
1906							2.74	80	31
1905							2.33	90	31
1904							2.02	106	31
1903							0.60	124	31
1902							1.35	114	31
1901							3.63	56	31
1900							2.61	82	31
1899							2.12	103	31
1898							5.29	23	31
1897							5.02	30	31
1896	70.1	1	81.2	1	58.9	2			0
1895	65.4	19	77.4	11	53.5	36	2.15	102	0
1894	66.6	9	77.9	7	55.4	16			0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1896	70.1
1991	69.1
2004	68.2
2015	68.1
2018	67.4
1944	67.3
2012	67
1918	66.8
1894	66.6
2019	66.2
More years share the last value

Coldest
Year	Mean, °F
1967	55.4
1917	55.8
2005	57.5
2003	58.1
1924	58.1
1920	58.1
1997	58.6
1935	58.7
1961	58.9
1925	58.9

Wettest
Year	Precipitation, in
1983	7.38
1948	7.35
2016	7.30
1947	7.24
1946	7.12
1990	7.03
1978	6.94
2025	6.73
1919	6.72
1989	6.57

Driest
Year	Precipitation, in
2023	0.20
1964	0.22
1939	0.35
1903	0.60
1997	0.82
1914	0.89
1970	0.94
1977	0.96
2007	1.02
1955	1.18

The hottest, coldest and wettest days

Hottest day: 96°F; 19 May 2026
Coldest night: 39°F; 12 May 2026
Wettest day: 0.94 in; 24 May 2026

Every month, season and year

Months

Seasons

Years

Wilmington, DE the day's answers

All-time records

Every answer in words

May 2026 brought 3.33 in of precipitation in Wilmington, DE, the driest May since 2024, tied 63rd driest of 127 (with 1921).
The hottest day of May 2026 in Wilmington, DE: 96°F on Tuesday 19 May 2026.
The coldest night of May 2026 in Wilmington, DE: a low of 39°F on Tuesday 12 May 2026.
The wettest day of May 2026 in Wilmington, DE: 0.94 in on Sunday 24 May 2026.