Dayton, OH: September

30 September 2026: September 2026 averaged 70.4°F in Dayton, OH, the warmest September since 2024, 13th warmest of 133.

September 2026

Mean temperature: 70.4°F; Warmest since 2024; 13th warmest of 133
Precipitation: 4.18 in; Wettest since 2024; 31st wettest of 132

A normal September in Dayton, OH (1991 to 2020): a mean temperature of 66.2°F, between 63.1°F and 69.8°F in eight years of ten and 2.69 in of precipitation, between 0.85 in and 6.74 in in eight years of ten.

The mean temperature of every September in Dayton, OH since 1893: 70.4°F in 2026; the highest is 73.8°F, in 2019.

Normal range, 63.1 to 69.8°F

Every year, ranked, as a table

Every September in Dayton, OH from 1893 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	70.4	13	80	35	60.8	8	4.18	31	0
2025	68.7	41	80.9	19	56.4	61	1.68	84	0
2024	70.7	10	82.3	11	59.1	23	4.68	25	0
2023	68.6	42	79.7	40	57.6	48	0.54	126	0
2022	67.9	50	78.1	67	57.7	45	2.13	80	0
2021	69.4	29	80.2	33	58.6	32	3.46	45	0
2020	67.2	67	78.6	58	55.7	68	0.90	110	0
2019	73.8	1	85.7	4	61.9	4	0.70	121	0
2018	70.2	16	78.6	58	61.7	5	6.72	4	0
2017	66.4	76	76.6	83	56.2	62	2.16	78	0
2016	69.7	24	80.4	30	58.9	25	3.28	52	0
2015	69.4	29	80.7	23	58.1	36	0.86	114	0
2014	65.5	90	76.9	81	54.2	94	0.88	112	0
2013	67.6	58	79.1	50	56.1	63	2.23	77	0
2012	64.2	107	73.9	117	54.5	87	5.27	15	0
2011	63.6	117	71.7	128	55.6	70	10.84	1	0
2010	67.9	50	80	35	55.8	66	1.65	87	0
2009	65.1	94	74.9	105	55.2	78	2.68	68	0
2008	68.5	43	80.1	34	56.8	55	2.69	67	0
2007	68.8	37	81	18	56.5	59	4.81	20	0
2006	62.1	127	70.6	131	53.5	105	5.09	16	0
2005	68.5	43	79	54	57.9	40	7.37	2	0
2004	66.6	74	77.6	73	55.5	73	0.61	125	0
2003	63.1	122	72.8	124	53.3	109	5.40	14	0
2002	69.6	27	80.6	26	58.7	26	5.74	9	0
2001	63	123	72.9	123	53	113	3.88	39	0
2000	64.2	107	74.8	106	53.6	103	2.84	59	0
1999	66.8	71	80.5	28	53.1	112	1.05	103	0
1998	70.6	11	82.6	9	58.5	33	0.77	118	0
1997	64.5	100	75.4	97	53.5	105	1.66	86	0
1996	64.4	102	74.4	113	54.5	87	6.87	3	0
1995	63.5	118	74.5	111	52.5	121	1.03	105	0
1994	64.9	96	76.2	88	53.6	103	0.97	108	0
1993	62.7	124	72.2	127	53.2	110	4.69	24	0
1992	64.3	104	75.1	101	53.5	105	2.27	76	0
1991	66	82	77.7	72	54.3	90	3.25	53	0
1990	65.1	94	74.6	108	55.6	70	2.60	70	0
1989	64.1	110	73.8	119	54.3	90	5.66	11	0
1988	65.3	93	75.7	95	55	81	4.73	23	0
1987	67.3	64	79.4	47	55.3	75	0.28	129	0
1986	68.8	37	78.8	55	58.7	26	3.15	55	0
1985	66.3	78	78.5	64	54	95	0.98	107	0
1984	62.5	125	72.3	126	52.7	117	3.30	50	0
1983	66.2	81	78.6	58	53.8	101	0.88	112	0
1982	63.9	113	73.9	117	53.8	101	1.40	93	0
1981	63.4	119	72.8	124	53.9	99	5.06	17	0
1980	68.8	37	79.9	37	57.7	45	1.45	91	0
1979	64.7	98	75.8	93	53.5	105	3.51	44	0
1978	69.4	29	80.9	19	57.9	40	0.43	128	0
1977	68.3	45	78.5	64	58.1	36	2.73	65	0
1976	61.7	130	74.6	108	48.8	134	1.71	83	0
1975	62	128	71.4	129	52.5	121	3.30	50	0
1974	60.5	131	70.6	131	50.4	129	3.68	42	0
1973	70.2	16	81.6	14	58.7	26	0.69	122	0
1972	65.8	85	76.2	88	55.3	75	4.64	26	0
1971	68.2	46	76.3	86	60.1	12	3.78	40	0
1970	69.3	32	79.1	50	59.5	15	1.29	94	0
1969	66.3	78	76.6	83	56.1	63	1.13	100	0
1968	65.5	90	75.4	97	55.6	70	2.74	64	0
1967	63.7	115	75.9	92	51.4	126	1.09	102	0
1966	64.3	104	73.8	119	54.7	84	3.63	43	0
1965	68.2	46	76.8	82	59.7	13	5.69	10	0
1964	67.1	69	79.6	45	54.5	87	1.04	104	0
1963	64.2	107	78.1	67	50.2	130	0.27	130	0
1962	62.4	126	73.2	121	51.5	125	0.96	109	0
1961	70.1	20	80.7	23	59.6	14	4.37	28	0
1960	69.5	28	80.3	31	58.7	26	0.90	110	0
1959	69	34	79.9	37	58.1	36	1.61	88	0
1958	65.6	89	74.5	111	56.6	57	4.10	34	0
1957	65.9	83	75.7	95	56.1	63	2.75	63	0
1956	63.4	119	75.1	101	51.6	124	1.15	99	0
1955	69.1	33	80.3	31	57.8	44	5.43	13	0
1954	69.9	21	81.6	14	58.1	36	0.47	127	0
1953	67.4	59	79.7	40	55	81	1.49	90	0
1952	65.9	83	77.1	77	54.7	84	3.24	54	0
1951	63.9	113	75	103	52.7	117	2.53	71	0
1950	64	111	73	122	55.1	79	4.09	35	0
1949	59.8	132	69.6	133	49.9	131	3.31	49	0
1948	67.8	54	78.6	58	56.9	53	1.67	85	0
1947	67.7	56	77.9	71	57.4	51	2.73	65	0
1946	67.4	59	79.7	40	55.1	79	0.84	116	0
1945	69.9	21	79.4	47	60.4	10	4.85	19	0
1944	67.3	64	77.6	73	56.9	53	1.44	92	0
1943	64.3	104	74.6	108	54	95	1.22	97	0
1942	65.8	85	75	103	56.6	57	2.81	61	0
1941	70.2	16	80.9	19	59.4	19	1.74	82	0
1940	64	111	75.2	100	52.8	116	1.13	100	0
1939	71.9	5	84.2	6	59.5	15	1.23	96	0
1938	67.4	59	76.3	86	58.5	33	4.00	37	0
1937	64.8	97	75.3	99	54.3	90	3.44	47	0
1936	71	9	80.8	22	61.3	6	3.94	38	0
1935	66.4	76	77	78	55.7	68	3.42	48	0
1934			78	70	57.1	52	4.09	35	4
1933	70.3	14	79.4	47	61.2	7	4.74	22	0
1932	67.4	59	77.2	76	57.6	48	3.78	40	0
1931	71.9	5	81.9	13	62	3	2.36	73	0
1930	69	34	78.6	58	59.3	20	2.76	62	0
1929	66.3	78	75.8	93	56.8	55	3.04	56	0
1928	63.4	119	74	116	52.7	117	0.73	119	0
1927	70.5	12	80.7	23	60.2	11	2.82	60	0
1926	67.9	50	77	78	58.7	26	6.26	6	0
1925	72.6	3	82	12	63.2	1	6.47	5	0
1924	62	128	71.2	130	52.9	114	2.92	57	0
1923	67	70	76.1	90	57.9	40	3.45	46	0
1922	70.2	16	81.1	16	59.2	21	2.46	72	0
1921	71.1	8	79.8	39	62.5	2	4.75	21	0
1920	67.9	50	77.5	75	58.3	35	2.62	69	0
1919	68.8	37	79.7	40	57.9	40	1.26	95	0
1918	59.1	133	68.4	134	49.8	132	4.13	32	0
1917	63.7	115	74.3	115	53.2	110	0.85	115	0
1916	64.4	102	74.8	106	53.9	99	5.90	8	0
1915	68	49	77	78	59	24	5.44	12	0
1914	65.7	88	76.1	90	55.3	75	0.71	120	0
1913	65.8	85	76.5	85	55	81	2.31	75	0
1912	68.1	48	78.6	58	57.7	45	2.16	78	0
1911	69.8	23	78.8	55	60.7	9	4.19	30	0
1910	67.7	56	79.7	40	55.8	66			1
1909	64.6	99	78.1	67	51.1	127	0.84	116	0
1908	69.7	24	87.5	2	51.8	123	0.25	131	2
1907	67.2	67	79.1	50	55.4	74	4.22	29	0
1906	71.3	7	83.5	8	58.7	26	2.89	58	2
1905	66.8	71	79.6	45	54	95	4.45	27	0
1904	66.6	74	78.8	55	54.3	90	2.00	81	0
1903	67.4	59	84	7	50.8	128	0.65	124	2
1902	65.4	92	78.2	66	52.6	120	4.95	18	0
1901	66.8	71	80.6	26	52.9	114	2.32	74	0
1900	72.8	2	86.4	3	59.2	21	0.99	106	0
1899	67.3	64	80.5	28	54	95	1.22	97	1
1898	69.7	24	82.6	9	57.5	50	4.13	32	2
1897	69	34	88.5	1	49.5	133	0.15	132	0
1896	64.5	100	74.4	113	54.6	86	6.02	7	0
1895	72	4	84.6	5	59.5	15	0.66	123	0
1894	70.3	14	81.1	16	59.5	15	1.54	89	0
1893	67.8	54	79.1	50	56.5	59			0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2019	73.8
1900	72.8
1925	72.6
1895	72
1939	71.9
1931	71.9
1906	71.3
1921	71.1
1936	71
2024	70.7

Coldest
Year	Mean, °F
1918	59.1
1949	59.8
1974	60.5
1976	61.7
1975	62
1924	62
2006	62.1
1962	62.4
1984	62.5
1993	62.7

Wettest
Year	Precipitation, in
2011	10.84
2005	7.37
1996	6.87
2018	6.72
1925	6.47
1926	6.26
1896	6.02
1916	5.90
2002	5.74
1965	5.69

Driest
Year	Precipitation, in
1897	0.15
1908	0.25
1963	0.27
1987	0.28
1978	0.43
1954	0.47
2023	0.54
2004	0.61
1903	0.65
1895	0.66

The hottest, coldest and wettest days

Hottest day: 94°F; 4 September 2026, 3 September 2026
Coldest night: 44°F; 25 September 2026
Wettest day: 1.34 in; 20 September 2026

Every month, season and year

Months

Seasons

Years

Dayton, OH the day's answers

All-time records

Every answer in words

September 2026 brought 4.18 in of precipitation in Dayton, OH, the wettest September since 2024, 31st wettest of 132.
The hottest day of September 2026 in Dayton, OH: 94°F on Friday 4 September 2026 and Thursday 3 September 2026.
The coldest night of September 2026 in Dayton, OH: a low of 44°F on Friday 25 September 2026.
The wettest day of September 2026 in Dayton, OH: 1.34 in on Sunday 20 September 2026.