Wilmington, DE: August

31 August 2026: August 2026 averaged 77.3°F in Wilmington, DE, the warmest August since 2022, tied 13th warmest of 113 (with 2001 and 1988).

August 2026

Mean temperature: 77.3°F; Warmest since 2022; 13th warmest of 113
Precipitation: 5.82 in; Wettest since 2024; 28th wettest of 128

A normal August in Wilmington, DE (1991 to 2020): a mean temperature of 76.4°F, between 72.7°F and 77.8°F in eight years of ten and 3.09 in of precipitation, between 1.50 in and 6.68 in in eight years of ten.

The mean temperature of every August in Wilmington, DE since 1894: 77.3°F in 2026; the highest is 79.2°F, in 2016.

Normal range, 72.7 to 77.8°F

Every year, ranked, as a table

Every August 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	77.3	13	86.5	18	68.2	14	5.82	28	0
2025	72.6	96	82.4	88	62.7	97	1.40	117	0
2024	75	50	84.6	51	65.4	55	6.63	19	0
2023	76.8	21	85.8	31	67.7	18	2.77	82	0
2022	78.9	2	88.6	3	69.1	5	2.39	96	0
2021	78.1	6	86.8	16	69.5	4	2.76	83	0
2020	76.7	22	84.8	49	68.6	9	9.36	9	0
2019	76.7	22	85.7	32	67.6	19	2.66	86	0
2018	78.2	4	86.5	18	70	1	6.67	18	0
2017	73.6	75	82.5	84	64.8	66	4.22	53	0
2016	79.2	1	88.6	3	69.8	3	1.55	114	0
2015	75.7	41	86	27	65.4	55	1.52	115	0
2014	72.7	93	82.1	95	63.3	85	4.77	44	0
2013	73.5	77	81.7	98	65.3	58	5.22	37	0
2012	76.4	30	85.5	34	67.3	23	2.81	80	0
2011	75	50	84	60	65.9	46	14.70	2	0
2010	77	19	86.2	22	67.8	17	1.34	119	0
2009	76.7	22	85	46	68.4	12	6.73	17	0
2008	73.1	83	83.4	68	62.9	92	1.16	123	0
2007	76.4	30	85.3	36	67.4	22	3.38	67	0
2006	76.7	22	86.2	22	67.3	23	2.59	90	0
2005	77.9	8	86.9	14	68.9	7	1.35	118	0
2004	73.1	83	81.3	104	64.9	64	5.33	33	0
2003	76.4	30	84.5	53	68.4	12	4.21	54	0
2002	77.8	10	87.9	5	67.6	19	2.03	107	0
2001	77.3	13	86.4	20	68.2	14	2.65	87	0
2000	72.7	93	80.8	107	64.5	71	2.47	93	0
1999	75.8	39	85.1	44	66.5	35	4.24	52	0
1998	75.5	42	85.3	36	65.7	53	3.14	71	0
1997	72.7	93	82.2	92	63.3	85	3.66	61	0
1996	74	67	82.5	84	65.4	55	3.04	76	0
1995	77.1	16	87.4	9	66.8	32	2.72	84	0
1994	73.1	83	82.3	90	64	75	5.68	31	0
1993	77.8	10	87.6	8	67.9	16	2.65	87	0
1992	72.2	102	81.5	100	62.8	95	2.21	104	0
1991	76.7	22	86.1	24	67.3	23	5.38	32	0
1990	74.5	59	83.2	74	65.9	46	6.15	25	0
1989	74.3	62	82.3	90	66.4	37	1.97	109	0
1988	77.3	13	86	27	68.6	9	3.03	77	0
1987	74.3	62	83.5	66	65	62	4.21	54	0
1986	72.5	98	81.5	100	63.4	82	2.88	79	0
1985	74.4	61	82.9	81	65.9	46	2.28	102	0
1984	75.2	47	84.1	59	66.3	39	1.56	113	0
1983	77	19	87.4	9	66.5	35	1.29	121	0
1982	72	103	82.5	84	61.5	105	4.68	47	0
1981	73.5	77	83	79	64	75	3.38	67	0
1980	78.2	4	87.9	5	68.5	11	1.09	125	0
1979	75	50	83.8	62	66.2	42	6.11	26	0
1978	77.1	16	85.2	39	69	6	5.97	27	0
1977	75.3	46	84	60	66.7	33	4.82	43	0
1976	73.7	73	83.3	70	64	75	2.00	108	0
1975	76.2	33	85.2	39	67.3	23	2.55	92	0
1974	76.1	34	84.9	48	67.3	23	5.11	40	0
1973	78	7	86.1	24	70	1	2.44	95	0
1972	75.5	42	85.1	44	65.9	46	0.25	128	0
1971	74	67	83.3	70	64.6	70	8.38	13	0
1970	76.7	22	86.3	21	67.1	30	2.31	99	0
1969	75.4	45	84.4	56	66.4	37	2.34	98	0
1968	77.1	16	86.9	14	67.3	23	1.17	122	0
1967	72.8	91	80.5	109	65	62	11.16	4	0
1966	74.7	56	85.2	39	64.3	73	1.42	116	0
1965	73.3	82	83.1	77	63.5	81	2.04	106	0
1964	71.5	107	81.5	100	61.5	105	1.83	112	0
1963	71.7	105	81.4	103	61.9	102	4.03	56	0
1962	72.8	91	82.6	83	63.1	89	1.87	111	0
1961	74	67	82.8	82	65.2	59	3.75	60	0
1960	74.8	54	83.4	68	66.3	39	5.08	42	0
1959	76	36	84.7	50	67.3	23	5.75	30	0
1958	73	88	81.6	99	64.3	73	7.00	15	0
1957	73.1	83	84.3	58	62	100	2.61	89	0
1956	73.4	79	83.1	77	63.7	79	3.58	62	0
1955	77.9	8	87	13	68.8	8	12.09	3	0
1954	72.9	89	82.4	88	63.4	82	5.82	28	0
1953	74.5	59	86.1	24	62.9	92	1.89	110	0
1952	74.2	65	83.7	64	64.8	66	3.09	74	0
1951	73.7	73	84.4	56	63.1	89	3.23	69	0
1950	72.5	98	83	79	62	100	3.05	75	0
1949	75.1	49	85.7	32	64.5	71	3.55	63	0
1948	73.6	75	83.8	62	63.4	82	4.58	48	0
1947	75.5	42	84.6	51	66	44	2.31	99	1
1946	69.6	112	79	112	60.2	112	6.26	23	0
1945	71.6	106	82.5	84	60.7	110	10.67	7	0
1944	74.7	56	86.6	17	62.8	95	3.53	64	0
1943	75.2	47	87.2	11	63.2	87	1.12	124	0
1942	72.6	96	82	97	63.2	87	9.54	8	0
1941	73.1	83	85.2	39	60.9	109	3.21	70	0
1940	70.7	111	80	111	61.5	105	5.33	33	0
1939	76.1	34	86	27	66.1	43	6.78	16	0
1938	76.5	29	87.1	12	66	44	5.24	36	1
1937	75.8	39	85	46	66.7	33	6.57	20	1
1936	75.9	38	86	27	65.8	50			2
1935	74	67	83.2	74	64.7	69			0
1934	71.3	108	80.7	108	61.9	102	5.33	33	0
1933	74.3	62	83.6	65	65.2	59	11.10	5	1
1932	74.8	54	85.3	36	64	75			1
1931	74.2	65	83.2	74	65.1	61	8.53	12	0
1930	73.9	72	85.4	35	62.4	98	1.34	119	0
1929	71.3	108	82.1	95	60.5	111	4.32	51	0
1928	76	36	84.5	53	67.5	21			0
1927	67.6	113	75.9	113	59.2	113	6.25	24	1
1926	74	67	82.2	92	65.8	50	2.67	85	0
1925	72.5	98	83.3	70	61.6	104	2.35	97	0
1924	73.4	79	83.3	70	63.6	80	3.79	59	0
1923	72.9	89	83.5	66	62.3	99	2.12	105	0
1922	72.5	98	82.2	92	62.9	92	3.13	72	0
1921	71.3	108	81.2	105	61.4	108	6.45	21	0
1920	73.4	79	81.1	106	65.6	54	8.12	14	0
1919	71.8	104	80.5	109	63.1	89	8.65	11	1
1918	76.7	22	87.7	7	65.8	50	2.45	94	0
1917	74.6	58	84.5	53	64.8	66	3.86	58	0
1916							0.60	126	31
1915							6.32	22	31
1914							3.13	72	31
1913							3.45	66	31
1912							2.24	103	31
1911							14.91	1	31
1910							4.69	46	31
1909							3.01	78	31
1908							3.96	57	31
1907							4.38	49	31
1906							10.70	6	31
1905							4.70	45	31
1903							4.37	50	31
1902							2.58	91	31
1901							8.73	10	31
1900							2.81	80	31
1899							5.11	40	31
1898							5.18	38	31
1897							3.51	65	31
1896	77.8	10	89.4	2	66.3	39	0.47	127	0
1895	78.8	3	90.6	1	67	31	2.31	99	0
1894	75	50	85.2	39	64.9	64	5.13	39	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2016	79.2
2022	78.9
1895	78.8
2018	78.2
1980	78.2
2021	78.1
1973	78
2005	77.9
1955	77.9
2002	77.8
More years share the last value

Coldest
Year	Mean, °F
1927	67.6
1946	69.6
1940	70.7
1934	71.3
1929	71.3
1921	71.3
1964	71.5
1945	71.6
1963	71.7
1919	71.8

Wettest
Year	Precipitation, in
1911	14.91
2011	14.70
1955	12.09
1967	11.16
1933	11.10
1906	10.70
1945	10.67
1942	9.54
2020	9.36
1901	8.73

Driest
Year	Precipitation, in
1972	0.25
1896	0.47
1916	0.60
1980	1.09
1943	1.12
2008	1.16
1968	1.17
1983	1.29
2010	1.34
1930	1.34

The hottest, coldest and wettest days

Hottest day: 93°F; 7 August 2026
Coldest night: 58°F; 25 August 2026
Wettest day: 1.13 in; 3 August 2026

Every month, season and year

Months

Seasons

Years

Wilmington, DE the day's answers

All-time records

Every answer in words

August 2026 brought 5.82 in of precipitation in Wilmington, DE, the wettest August since 2024, tied 28th wettest of 128 (with 1954).
The hottest day of August 2026 in Wilmington, DE: 93°F on Friday 7 August 2026.
The coldest night of August 2026 in Wilmington, DE: a low of 58°F on Tuesday 25 August 2026.
The wettest day of August 2026 in Wilmington, DE: 1.13 in on Monday 3 August 2026.