Wilmington, OH: September

30 September 2026: September 2026 averaged 70.8°F in Wilmington, OH, the warmest September since 2019, tied 6th warmest of 108 (with 1931).

September 2026

Mean temperature: 70.8°F; Warmest since 2019; 6th warmest of 108
Precipitation: 5.94 in; Wettest since 2006; 11th wettest of 110

A normal September in Wilmington, OH (1991 to 2020): a mean temperature of 65.1°F, between 62.7°F and 69.3°F in eight years of ten and 2.40 in of precipitation, between 1.01 in and 6.05 in in eight years of ten.

The mean temperature of every September in Wilmington, OH since 1917: 70.8°F in 2026; the highest is 73.6°F, in 1939.

Normal range, 62.7 to 69.3°F

Every year, ranked, as a table

Every September in Wilmington, OH from 1915 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	70.8	6	81.3	26	60.3	2	5.94	11	0
2025	67.1	43	80.7	31	53.6	55	1.89	76	0
2024	69.7	12	82.3	19	57.1	16	3.17	47	0
2023	68.4	25	79.6	45	57.2	15	1.22	98	0
2022	66.4	57	76.7	75	56	24	2.64	58	0
2021	67.8	35	78.9	55	56.7	17	2.99	50	0
2020	64.9	74	76.5	77	53.3	62	1.35	94	0
2019	71.1	5	83.6	7	58.7	5	1.60	85	0
2018	70.1	10	79.3	48	61	1	4.79	21	0
2017	65.4	66	76.6	76	54.2	51	2.40	65	0
2016	69.3	18	80.8	29	57.8	10	3.49	40	0
2015	68.1	32	80	41	56.1	23	2.49	63	0
2014	64	81	76.3	80	51.7	81	0.85	106	0
2013	66.2	58	78.7	57	53.6	55	2.89	51	0
2012	64.2	79	75.4	87	52.9	67	3.86	32	0
2011	63.8	83	72.7	104	54.8	42	4.56	26	0
2010	67.3	40	80.9	28	53.7	54	1.23	97	0
2009	65	71	75.1	89	55	39	2.54	60	0
2008	68.4	25	80.6	33	56.2	21	1.58	86	0
2007	69.4	15	82.9	11	55.9	27	1.95	74	0
2006	61.8	104	70.8	107	53	66	7.12	2	1
2005	68.3	29	80.6	33	56	24	1.65	84	0
2004	66.1	59	77.7	67	54.5	47	2.74	54	0
2003	62.5	97	73.4	100	51.6	82	6.55	6	0
2002	68	33	80.4	35	55.6	32	6.04	9	0
2001	62.4	99	73.3	102	51.5	83	1.46	90	0
2000	63.1	90	73.8	98	52.3	76	6.14	8	1
1999	65	71	80.3	39	49.6	98	0.88	105	0
1998	68.6	23	82.6	15	54.5	47	1.69	82	0
1997	62.7	95	75.4	87	50	96	1.02	102	0
1996	63.8	83	74.3	96	53.3	62	4.56	26	0
1995	62.7	95	74.7	93	50.6	91	2.40	65	0
1994	64.3	78	75	90	53.6	55	0.93	104	0
1993	65.2	68	76.1	83	54.2	51	2.38	67	1
1992	66.5	55	77.9	64	55	39	1.28	96	0
1991	64.5	77	76.4	79	52.5	72	2.54	60	0
1990	64	81	74.8	92	53.4	60	3.73	36	1
1989	62.5	97	73.3	102	51.8	79	3.28	46	0
1988	63.2	89	74.9	91	51.5	83	4.99	16	0
1987	65.5	65	77.7	67	53.3	62	1.94	75	0
1986	67	45	78.1	62	55.9	27	4.12	30	0
1985	65.1	69	78.8	56	51.4	85	0.58	109	0
1984	62	101	73.8	98	50.3	95	3.55	38	0
1983	66.7	49	80	41	53.4	60	1.88	77	0
1982	62.8	93	74.7	93	50.9	89	1.33	95	0
1980	66	62	79.3	48	52.7	70	1.10	101	0
1979	63.4	86	76	84	50.8	90	6.61	5	0
1978	67.3	40	79.7	44	54.8	42	2.18	71	0
1977	66.7	49	77.8	65	55.6	32	2.21	70	0
1976	56.6	108	70.7	108	42.5	108	1.78	80	0
1975	59.4	106	72.2	105	46.5	106	3.43	43	0
1973	66.9	47	81.1	27	52.7	70	2.05	73	0
1972	67	45	77.4	71	56.6	19	6.64	4	0
1971	68.4	25	78.6	61	58.1	8	5.99	10	0
1970	70.5	9	82.5	16	58.4	6	4.03	31	0
1969	64.9	74	77.3	72	52.4	74	1.40	93	0
1968	66.5	55	78.1	62	54.8	42	2.56	59	0
1967	62.8	93	76.3	80	49.4	99	2.06	72	0
1966	62.9	92	73.4	100	52.4	74	3.47	41	0
1965	67.7	37	78.7	57	56.7	17	8.20	1	0
1964	66.6	53	80.7	31	52.5	72	2.42	64	0
1963	63.8	83	77.7	67	49.8	97	1.55	88	0
1962	62.3	100	74	97	50.5	93	3.59	37	0
1961	69.7	12	82.1	22	57.4	12	2.78	53	0
1960	68.3	29	80.8	29	55.7	30	1.11	100	0
1959	68.8	21	81.8	25	55.8	29	2.26	69	0
1958	66.7	49	77.8	65	55.7	30	3.53	39	0
1957	66.1	59	77.1	73	55.1	37	5.12	13	0
1956	63.4	86	76.3	80	50.6	91	2.69	55	0
1955	68.9	20	82	24	55.5	34	5.17	12	1
1954	68.5	24	82.1	22	54.9	41	1.13	99	0
1953	67.6	38	82.3	19	52.8	68	0.55	110	0
1952	64.9	74	79.4	47	50.4	94	2.54	60	0
1951	65.3	67	79.1	52	51.4	85	4.84	19	0
1950	65.1	69	76.5	77	53.6	55	6.36	7	0
1949	61.9	102	76	84	47.8	104	2.83	52	0
1948	68.2	31	82.8	14	53.5	59	1.80	79	0
1947	67.1	43	79.9	43	54.3	50	3.80	34	0
1946	66.8	48	82.5	16	51	87	0.67	108	0
1945	69.4	15	82.3	19	56.4	20	3.81	33	0
1944	65.7	64	79.6	45	51.8	79	1.66	83	0
1943	63.4	86	77.5	70	49.3	101	1.88	77	0
1942	65.8	63	79.3	48	52.2	77	3.47	41	0
1941	69.4	15	83.7	6	55.1	37	1.76	81	0
1940	64.1	80	78.7	57	49.4	99	1.41	92	1
1939	73.6	1	89.9	1	57.3	14	1.42	91	0
1938	67.2	42	79.1	52	55.2	36	4.85	18	0
1937	65	71	79	54	51	87	4.80	20	0
1936	71.2	4	84	4	58.4	6	2.65	57	0
1935	66.1	59	80.1	40	52.1	78	4.59	23	0
1934	69.2	19	82.4	18	56	24	5.01	15	0
1933	70.6	8	83.5	8	57.8	10	5.07	14	0
1932	66.7	49	80.4	35	53.1	65	3.35	44	0
1931	70.8	6	83.9	5	57.9	9	4.58	24	1
1930	69.7	12	83.2	9	56.2	21	1.58	86	0
1929	66.6	53	78.7	57	54.5	47	4.62	22	0
1928	61.8	104	76	84	47.1	105	0.80	107	1
1927	68.8	21	82.9	11	54.7	45	3.07	49	0
1926	68.4	25	79.3	48	57.4	12	6.92	3	0
1925	72.4	2	84.6	3	60.1	3	4.58	24	0
1924	61.9	102	74.4	95	49.3	101	3.76	35	0
1923	67.6	38	80.4	35	54.2	51	3.15	48	2
1922	69.9	11	85.1	2	54.7	45	1.49	89	0
1921	71.6	3	83.2	9	60	4	3.32	45	0
1920	67.9	34	80.4	35	55.5	34	4.30	29	2
1919	67.8	35	82.9	11	52.8	68	2.30	68	1
1918	58.9	107	71.9	106	46	107	4.41	28	0
1917	63.1	90	76.8	74	49.3	101	0.96	103	0
1916							2.68	56	30
1915							4.99	16	30

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1939	73.6
1925	72.4
1921	71.6
1936	71.2
2019	71.1
2026	70.8
1931	70.8
1933	70.6
1970	70.5
2018	70.1

Coldest
Year	Mean, °F
1976	56.6
1918	58.9
1975	59.4
2006	61.8
1928	61.8
1949	61.9
1924	61.9
1984	62
1962	62.3
2001	62.4

Wettest
Year	Precipitation, in
1965	8.20
2006	7.12
1926	6.92
1972	6.64
1979	6.61
2003	6.55
1950	6.36
2000	6.14
2002	6.04
1971	5.99

Driest
Year	Precipitation, in
1953	0.55
1985	0.58
1946	0.67
1928	0.80
2014	0.85
1999	0.88
1994	0.93
1917	0.96
1997	1.02
1980	1.10

The hottest, coldest and wettest days

Hottest day: 96°F; 4 September 2026
Coldest night: 44°F; 26 September 2026, 25 September 2026
Wettest day: 1.95 in; 20 September 2026

Every month, season and year

Months

Seasons

Years

Wilmington, OH the day's answers

All-time records

Every answer in words

September 2026 brought 5.94 in of precipitation in Wilmington, OH, the wettest September since 2006, 11th wettest of 110.
The hottest day of September 2026 in Wilmington, OH: 96°F on Friday 4 September 2026.
The coldest night of September 2026 in Wilmington, OH: a low of 44°F on Saturday 26 September 2026 and Friday 25 September 2026.
The wettest day of September 2026 in Wilmington, OH: 1.95 in on Sunday 20 September 2026.