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Topics / Climate / United States / Ohio

Was September normal in Ohio?

September 2026 · 88 counties · data family: climatedata.dev

Much warmer than normal

68.8°FStatewide average temperature, September 2026

+3.7°F against the 1991–2020 normal of 65.1°F
9th warmest September of 132 since 1895
Of 88 counties: 69 much warmer, 19 warmer
Furthest above normal: Hamilton County (+5.5°F); least: Lorain County (+1.6°F)
Precipitation 5.14 in, 156% of normal: much wetter than normal

Every Ohio county, September 2026September 2026 was warmer than normal in every county with a figure: 69 much warmer, 19 warmer; furthest above normal Hamilton County (+5.5°F), least Lorain County (+1.6°F).Choose a county to see its answer. The colour shows how far each county was from its own 1991–2020 normal.

+4°F or more 30
+3 to +4°F 42
+2 to +3°F 14
+1 to +2°F 2
within 1°F 0
−1 to −2°F 0

Much warmer than normal 69
Warmer than normal 19
Near normal 0
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Ohio statewideSeptember 2026 averaged 68.8°F, +3.7°F against the 1991–2020 normal: the 9th warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	68.8°F
2025	66.7°F
2024	68.2°F
2023	65.9°F
2022	65.2°F
2021	66.9°F
2020	64.7°F
2019	69.8°F
2018	69.6°F
2017	65.8°F
2016	69.2°F
2015	68.4°F
2014	64.0°F
2013	64.5°F
2012	63.3°F
2011	64.2°F
2010	65.9°F
2009	64.6°F
2008	67.0°F
2007	67.4°F
2006	61.9°F
2005	67.7°F
2004	66.1°F
2003	62.8°F
2002	68.3°F
2001	62.3°F
2000	63.2°F
1999	64.7°F
1998	68.0°F
1997	62.9°F
1996	63.5°F
1995	62.0°F
1994	63.1°F
1993	62.2°F
1992	62.8°F
1991	64.1°F
1990	64.3°F
1989	63.1°F
1988	63.4°F
1987	65.1°F
1986	66.8°F
1985	65.2°F
1984	62.1°F
1983	65.3°F
1982	62.8°F
1981	62.5°F
1980	66.2°F
1979	63.8°F
1978	67.9°F
1977	66.6°F
1976	60.9°F
1975	59.9°F
1974	60.3°F
1973	66.7°F
1972	65.3°F
1971	67.3°F
1970	68.1°F
1969	63.2°F
1968	64.8°F
1967	60.2°F
1966	61.4°F
1965	66.3°F
1964	64.3°F
1963	62.0°F
1962	61.1°F
1961	68.5°F
1960	67.0°F
1959	67.3°F
1958	63.9°F
1957	64.4°F
1956	61.1°F
1955	66.4°F
1954	66.8°F
1953	64.7°F
1952	63.9°F
1951	62.7°F
1950	62.6°F
1949	59.5°F
1948	65.6°F
1947	65.3°F
1946	64.7°F
1945	66.9°F
1944	64.0°F
1943	61.5°F
1942	63.5°F
1941	67.5°F
1940	61.6°F
1939	68.9°F
1938	64.5°F
1937	61.8°F
1936	68.2°F
1935	63.1°F
1934	66.6°F
1933	68.2°F
1932	64.9°F
1931	69.2°F
1930	66.6°F
1929	64.5°F
1928	60.4°F
1927	66.9°F
1926	65.8°F
1925	69.0°F
1924	59.8°F
1923	64.6°F
1922	67.0°F
1921	69.3°F
1920	65.4°F
1919	65.7°F
1918	57.4°F
1917	60.9°F
1916	62.7°F
1915	66.2°F
1914	62.7°F
1913	63.5°F
1912	66.7°F
1911	67.1°F
1910	65.9°F
1909	62.7°F
1908	67.3°F
1907	65.1°F
1906	68.4°F
1905	64.8°F
1904	65.0°F
1903	65.1°F
1902	63.2°F
1901	64.3°F
1900	69.0°F
1899	63.5°F
1898	67.6°F
1897	65.9°F
1896	61.7°F
1895	68.4°F

All 88 counties, September 2026

Record rank: 1 is the warmest September on record for that county.


1	Hamilton	73.2°F	+5.5°F	3 of 132	Much warmer than normal
2	Butler	71.9°F	+5.1°F	3 of 132	Much warmer than normal
3	Pike	71.4°F	+5.1°F	4 of 132	Much warmer than normal
4	Clermont	72.2°F	+5.0°F	3 of 132	Much warmer than normal
5	Scioto	72.0°F	+5.0°F	3 of 132	Much warmer than normal
6	Lawrence	72.3°F	+4.8°F	3 of 132	Much warmer than normal
7	Adams	71.6°F	+4.7°F	4 of 132	Much warmer than normal
8	Brown	71.3°F	+4.7°F	4 of 132	Much warmer than normal
9	Jackson	70.9°F	+4.7°F	6 of 132	Much warmer than normal
10	Preble	70.0°F	+4.6°F	2 of 132	Much warmer than normal
11	Perry	69.3°F	+4.5°F	6 of 132	Much warmer than normal
12	Ross	70.6°F	+4.5°F	8 of 132	Much warmer than normal
13	Warren	71.2°F	+4.5°F	5 of 132	Much warmer than normal
14	Marion	69.4°F	+4.4°F	4 of 132	Much warmer than normal
15	Montgomery	70.8°F	+4.4°F	3 of 132	Much warmer than normal
16	Morgan	69.8°F	+4.4°F	8 of 132	Much warmer than normal
17	Vinton	70.0°F	+4.4°F	7 of 132	Much warmer than normal
18	Hocking	69.6°F	+4.3°F	7 of 132	Much warmer than normal
19	Muskingum	69.4°F	+4.3°F	6 of 132	Much warmer than normal
20	Greene	70.1°F	+4.2°F	5 of 132	Much warmer than normal
21	Athens	69.8°F	+4.1°F	7 of 132	Much warmer than normal
22	Darke	69.2°F	+4.1°F	6 of 132	Much warmer than normal
23	Noble	69.5°F	+4.1°F	5 of 132	Much warmer than normal
24	Washington	70.5°F	+4.1°F	5 of 132	Much warmer than normal
25	Wyandot	69.2°F	+4.1°F	4 of 132	Much warmer than normal
26	Clark	69.4°F	+4.0°F	6 of 132	Much warmer than normal
27	Clinton	69.7°F	+4.0°F	7 of 132	Much warmer than normal
28	Guernsey	69.0°F	+4.0°F	4 of 132	Much warmer than normal
29	Highland	69.9°F	+4.0°F	8 of 132	Much warmer than normal
30	Miami	69.9°F	+4.0°F	6 of 132	Much warmer than normal
31	Coshocton	68.4°F	+3.9°F	7 of 132	Much warmer than normal
32	Hardin	68.9°F	+3.9°F	6 of 132	Much warmer than normal
33	Knox	67.6°F	+3.9°F	8 of 132	Much warmer than normal
34	Madison	69.4°F	+3.9°F	10 of 132	Much warmer than normal
35	Morrow	67.9°F	+3.9°F	7 of 132	Much warmer than normal
36	Tuscarawas	68.2°F	+3.9°F	7 of 132	Much warmer than normal
37	Fairfield	69.3°F	+3.8°F	10 of 132	Much warmer than normal
38	Hancock	69.0°F	+3.8°F	5 of 132	Much warmer than normal
39	Licking	68.4°F	+3.8°F	11 of 132	Much warmer than normal
40	Crawford	67.9°F	+3.7°F	8 of 132	Much warmer than normal
41	Delaware	69.1°F	+3.7°F	10 of 132	Much warmer than normal
42	Gallia	70.8°F	+3.7°F	9 of 132	Much warmer than normal
43	Holmes	67.4°F	+3.7°F	10 of 132	Much warmer than normal
44	Union	69.0°F	+3.7°F	8 of 132	Much warmer than normal
45	Champaign	68.5°F	+3.6°F	9 of 132	Much warmer than normal
46	Fayette	69.2°F	+3.6°F	10 of 132	Much warmer than normal
47	Meigs	70.0°F	+3.6°F	12 of 132	Much warmer than normal
48	Mercer	68.8°F	+3.6°F	9 of 132	Much warmer than normal
49	Pickaway	70.0°F	+3.6°F	9 of 132	Much warmer than normal
50	Franklin	69.8°F	+3.5°F	13 of 132	Much warmer than normal
51	Allen	68.7°F	+3.4°F	13 of 132	Much warmer than normal
52	Shelby	68.6°F	+3.4°F	10 of 132	Much warmer than normal
53	Auglaize	68.5°F	+3.3°F	18 of 132	Warmer than normal
54	Putnam	68.6°F	+3.3°F	13 of 132	Much warmer than normal
55	Richland	66.6°F	+3.3°F	13 of 132	Much warmer than normal
56	Wayne	67.0°F	+3.3°F	12 of 132	Much warmer than normal
57	Geauga	65.9°F	+3.2°F	7 of 132	Much warmer than normal
58	Harrison	67.7°F	+3.2°F	10 of 132	Much warmer than normal
59	Logan	68.0°F	+3.2°F	13 of 132	Much warmer than normal
60	Trumbull	66.4°F	+3.2°F	8 of 132	Much warmer than normal
61	Van Wert	68.4°F	+3.2°F	18 of 132	Warmer than normal
62	Monroe	68.6°F	+3.1°F	14 of 132	Warmer than normal
63	Seneca	67.9°F	+3.1°F	14 of 132	Warmer than normal
64	Wood	68.5°F	+3.1°F	11 of 132	Much warmer than normal
65	Ashtabula	66.0°F	+3.0°F	9 of 132	Much warmer than normal
66	Carroll	67.0°F	+3.0°F	11 of 132	Much warmer than normal
67	Defiance	67.8°F	+3.0°F	16 of 132	Warmer than normal
68	Henry	68.1°F	+3.0°F	11 of 132	Much warmer than normal
69	Paulding	68.1°F	+3.0°F	18 of 132	Warmer than normal
70	Portage	66.4°F	+3.0°F	9 of 132	Much warmer than normal
71	Stark	67.0°F	+3.0°F	9 of 132	Much warmer than normal
72	Williams	66.9°F	+3.0°F	15 of 132	Warmer than normal
73	Ashland	66.4°F	+2.9°F	17 of 132	Warmer than normal
74	Fulton	67.2°F	+2.9°F	13 of 132	Much warmer than normal
75	Lake	67.3°F	+2.9°F	8 of 132	Much warmer than normal
76	Mahoning	66.3°F	+2.8°F	8 of 132	Much warmer than normal
77	Summit	67.2°F	+2.8°F	10 of 132	Much warmer than normal
78	Lucas	68.0°F	+2.7°F	16 of 132	Warmer than normal
79	Belmont	67.7°F	+2.6°F	17 of 132	Warmer than normal
80	Medina	66.5°F	+2.5°F	18 of 132	Warmer than normal
81	Ottawa	68.2°F	+2.5°F	20 of 132	Warmer than normal
82	Sandusky	67.9°F	+2.5°F	22 of 132	Warmer than normal
83	Columbiana	66.3°F	+2.4°F	15 of 132	Warmer than normal
84	Cuyahoga	67.2°F	+2.4°F	14 of 132	Warmer than normal
85	Jefferson	67.1°F	+2.3°F	19 of 132	Warmer than normal
86	Huron	66.5°F	+2.2°F	28 of 132	Warmer than normal
87	Erie	67.1°F	+1.6°F	37 of 132	Warmer than normal
88	Lorain	66.3°F	+1.6°F	38 of 132	Warmer than normal

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/topics/climate/us-oh.json

The climatedata.dev API it comes from (live, no key; every month since 1895 with its normal, anomaly and rank):

curl "https://api.climatedata.dev/v1/us-climate/tavg/us-oh.json"

Open the JSON

What this can't tell you

A statewide average is not the average of its counties: NOAA computes it from its own grid, weighted by area.
The most recent months are preliminary and NOAA revises them in the next release.

How the answer is decided

Each month is ranked against the same month in every year on record (since 1895 for most places). The top tenth of the record is 'much warmer than normal', the top third 'warmer', the middle third 'near normal'. Counties are coloured by the same five words.

Sources

climatedata.dev us-climate, version 2026-10-25.6c7474e6d8 (U.S. public domain)
NOAA Monthly U.S. Climate Divisional Database (nClimDiv), statewide and national files (U.S. public domain)
climatedata.dev county-climate, version 2026-10-25.b4bbb5298a (U.S. public domain)
U.S. Census Bureau TIGERweb, counties (generalised) (U.S. public domain)
Built 2026-10-26. Download every county's answer (JSON)

Every topic for one county: How's Hennepin County?