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Topics / Climate / United States / Indiana

Was September normal in Indiana?

September 2026 · 92 counties · data family: climatedata.dev

Much warmer than normal

71.5°FStatewide average temperature, September 2026

+5.5°F against the 1991–2020 normal of 66.0°F
2nd warmest September of 132 since 1895
Of 92 counties: 91 much warmer, 1 warmer
Furthest above normal: Martin County (+7.8°F); least: St. Joseph County (+3.3°F)
Precipitation 2.99 in, 91% of normal: near normal

Every Indiana county, September 2026September 2026 was warmer than normal in every county with a figure: 91 much warmer, 1 warmer; furthest above normal Martin County (+7.8°F), least St. Joseph County (+3.3°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 73
+3 to +4°F 19
+1 to +2°F 0
within 1°F 0
−1 to −2°F 0

Much warmer than normal 91
Warmer than normal 1
Near normal 0
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Indiana statewideSeptember 2026 averaged 71.5°F, +5.5°F against the 1991–2020 normal: the 2nd warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	71.5°F
2025	67.6°F
2024	68.4°F
2023	67.1°F
2022	66.1°F
2021	68.4°F
2020	65.2°F
2019	70.8°F
2018	69.9°F
2017	67.2°F
2016	69.9°F
2015	68.8°F
2014	64.0°F
2013	66.9°F
2012	64.2°F
2011	63.6°F
2010	67.2°F
2009	65.5°F
2008	67.6°F
2007	69.0°F
2006	62.5°F
2005	69.2°F
2004	67.1°F
2003	63.4°F
2002	69.2°F
2001	63.6°F
2000	64.4°F
1999	65.6°F
1998	69.6°F
1997	64.8°F
1996	63.9°F
1995	63.2°F
1994	64.3°F
1993	61.5°F
1992	63.7°F
1991	65.4°F
1990	66.3°F
1989	63.2°F
1988	65.5°F
1987	66.6°F
1986	68.4°F
1985	66.0°F
1984	63.6°F
1983	66.4°F
1982	63.9°F
1981	63.7°F
1980	67.1°F
1979	64.7°F
1978	68.9°F
1977	67.6°F
1976	62.5°F
1975	61.1°F
1974	60.7°F
1973	68.0°F
1972	66.9°F
1971	68.2°F
1970	68.6°F
1969	64.5°F
1968	65.0°F
1967	62.4°F
1966	63.0°F
1965	66.5°F
1964	65.5°F
1963	64.4°F
1962	62.3°F
1961	69.3°F
1960	69.3°F
1959	67.9°F
1958	65.1°F
1957	64.3°F
1956	63.6°F
1955	67.8°F
1954	68.7°F
1953	66.4°F
1952	64.8°F
1951	63.0°F
1950	63.8°F
1949	60.0°F
1948	67.0°F
1947	66.4°F
1946	65.6°F
1945	67.0°F
1944	65.8°F
1943	61.9°F
1942	64.0°F
1941	69.4°F
1940	63.8°F
1939	70.6°F
1938	67.0°F
1937	63.6°F
1936	69.5°F
1935	65.0°F
1934	65.4°F
1933	71.0°F
1932	64.7°F
1931	70.7°F
1930	67.2°F
1929	65.0°F
1928	61.4°F
1927	69.4°F
1926	66.8°F
1925	71.9°F
1924	60.8°F
1923	65.7°F
1922	69.3°F
1921	70.3°F
1920	67.5°F
1919	68.2°F
1918	58.0°F
1917	63.5°F
1916	64.2°F
1915	67.1°F
1914	64.9°F
1913	65.1°F
1912	66.9°F
1911	68.3°F
1910	65.8°F
1909	62.8°F
1908	69.2°F
1907	64.1°F
1906	69.2°F
1905	66.4°F
1904	66.0°F
1903	65.3°F
1902	62.7°F
1901	65.4°F
1900	69.1°F
1899	65.0°F
1898	68.8°F
1897	68.5°F
1896	62.6°F
1895	69.1°F

All 92 counties, September 2026

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


1	Martin	75.1°F	+7.8°F	1 of 132	Much warmer than normal
2	Daviess	75.5°F	+7.6°F	1 of 132	Much warmer than normal
3	Orange	74.7°F	+7.6°F	1 of 132	Much warmer than normal
4	Dubois	75.4°F	+7.5°F	1 of 132	Much warmer than normal
5	Posey	77.4°F	+7.5°F	1 of 132	Much warmer than normal
6	Gibson	76.6°F	+7.3°F	1 of 132	Much warmer than normal
7	Knox	75.9°F	+7.3°F	1 of 132	Much warmer than normal
8	Pike	75.9°F	+7.3°F	1 of 132	Much warmer than normal
9	Bartholomew	74.1°F	+7.2°F	1 of 132	Much warmer than normal
10	Switzerland	75.1°F	+7.2°F	1 of 132	Much warmer than normal
11	Crawford	74.9°F	+7.1°F	2 of 132	Much warmer than normal
12	Vanderburgh	77.0°F	+7.1°F	1 of 132	Much warmer than normal
13	Lawrence	73.9°F	+7.0°F	1 of 132	Much warmer than normal
14	Sullivan	74.8°F	+7.0°F	1 of 132	Much warmer than normal
15	Greene	74.0°F	+6.9°F	2 of 132	Much warmer than normal
16	Shelby	73.3°F	+6.9°F	2 of 132	Much warmer than normal
17	Brown	73.2°F	+6.8°F	2 of 132	Much warmer than normal
18	Harrison	75.2°F	+6.8°F	2 of 132	Much warmer than normal
19	Warrick	76.0°F	+6.8°F	2 of 132	Much warmer than normal
20	Jackson	74.0°F	+6.7°F	2 of 132	Much warmer than normal
21	Jefferson	74.5°F	+6.7°F	1 of 132	Much warmer than normal
22	Jennings	73.9°F	+6.7°F	2 of 132	Much warmer than normal
23	Johnson	73.0°F	+6.7°F	2 of 132	Much warmer than normal
24	Ohio	74.5°F	+6.7°F	1 of 132	Much warmer than normal
25	Washington	74.0°F	+6.7°F	1 of 132	Much warmer than normal
26	Decatur	72.9°F	+6.6°F	2 of 132	Much warmer than normal
27	Monroe	72.9°F	+6.5°F	2 of 132	Much warmer than normal
28	Ripley	73.0°F	+6.5°F	1 of 132	Much warmer than normal
29	Floyd	75.1°F	+6.4°F	2 of 132	Much warmer than normal
30	Scott	74.3°F	+6.4°F	2 of 132	Much warmer than normal
31	Vigo	73.7°F	+6.4°F	1 of 132	Much warmer than normal
32	Clark	74.9°F	+6.3°F	3 of 132	Much warmer than normal
33	Perry	74.8°F	+6.3°F	2 of 132	Much warmer than normal
34	Clay	72.9°F	+6.2°F	2 of 132	Much warmer than normal
35	Dearborn	73.4°F	+6.2°F	1 of 132	Much warmer than normal
36	Morgan	72.4°F	+6.2°F	2 of 132	Much warmer than normal
37	Owen	72.6°F	+6.2°F	2 of 132	Much warmer than normal
38	Spencer	75.3°F	+6.2°F	2 of 132	Much warmer than normal
39	Vermillion	72.7°F	+6.0°F	1 of 132	Much warmer than normal
40	Rush	71.6°F	+5.9°F	2 of 132	Much warmer than normal
41	Franklin	72.1°F	+5.8°F	2 of 132	Much warmer than normal
42	Hendricks	71.3°F	+5.8°F	2 of 132	Much warmer than normal
43	Marion	72.1°F	+5.8°F	2 of 132	Much warmer than normal
44	Putnam	71.3°F	+5.8°F	2 of 132	Much warmer than normal
45	Hancock	71.5°F	+5.7°F	2 of 132	Much warmer than normal
46	Parke	72.1°F	+5.7°F	2 of 132	Much warmer than normal
47	Fountain	71.5°F	+5.6°F	2 of 132	Much warmer than normal
48	Fayette	71.2°F	+5.5°F	2 of 132	Much warmer than normal
49	Montgomery	70.8°F	+5.5°F	2 of 132	Much warmer than normal
50	Boone	70.6°F	+5.4°F	2 of 132	Much warmer than normal
51	Hamilton	71.0°F	+5.4°F	2 of 132	Much warmer than normal
52	Union	71.0°F	+5.3°F	2 of 132	Much warmer than normal
53	Tipton	70.3°F	+5.2°F	3 of 132	Much warmer than normal
54	Warren	70.9°F	+5.2°F	2 of 132	Much warmer than normal
55	Benton	70.2°F	+5.1°F	2 of 132	Much warmer than normal
56	Clinton	70.2°F	+5.1°F	2 of 132	Much warmer than normal
57	Henry	70.1°F	+5.1°F	3 of 132	Much warmer than normal
58	Newton	70.4°F	+5.1°F	1 of 132	Much warmer than normal
59	Tippecanoe	70.5°F	+5.1°F	3 of 132	Much warmer than normal
60	Howard	69.9°F	+4.9°F	3 of 132	Much warmer than normal
61	Jasper	69.8°F	+4.9°F	1 of 132	Much warmer than normal
62	Madison	70.5°F	+4.9°F	4 of 132	Much warmer than normal
63	White	69.9°F	+4.9°F	2 of 132	Much warmer than normal
64	Wayne	69.8°F	+4.7°F	2 of 132	Much warmer than normal
65	Carroll	69.9°F	+4.6°F	4 of 132	Much warmer than normal
66	Delaware	69.7°F	+4.4°F	6 of 132	Much warmer than normal
67	Grant	69.7°F	+4.4°F	4 of 132	Much warmer than normal
68	Cass	69.3°F	+4.3°F	4 of 132	Much warmer than normal
69	Lake	69.2°F	+4.2°F	3 of 132	Much warmer than normal
70	Miami	69.3°F	+4.2°F	4 of 132	Much warmer than normal
71	Pulaski	68.8°F	+4.2°F	3 of 132	Much warmer than normal
72	Randolph	68.9°F	+4.2°F	5 of 132	Much warmer than normal
73	Blackford	69.4°F	+4.1°F	7 of 132	Much warmer than normal
74	Fulton	68.3°F	+3.9°F	5 of 132	Much warmer than normal
75	Jay	69.0°F	+3.9°F	6 of 132	Much warmer than normal
76	Wabash	68.9°F	+3.9°F	8 of 132	Much warmer than normal
77	Porter	68.2°F	+3.8°F	6 of 132	Much warmer than normal
78	Steuben	66.9°F	+3.8°F	6 of 132	Much warmer than normal
79	DeKalb	67.5°F	+3.7°F	7 of 132	Much warmer than normal
80	Noble	67.5°F	+3.7°F	8 of 132	Much warmer than normal
81	Starke	68.0°F	+3.7°F	7 of 132	Much warmer than normal
82	Wells	68.7°F	+3.7°F	8 of 132	Much warmer than normal
83	Huntington	68.5°F	+3.6°F	11 of 132	Much warmer than normal
84	LaGrange	67.2°F	+3.6°F	7 of 132	Much warmer than normal
85	Marshall	67.6°F	+3.6°F	6 of 132	Much warmer than normal
86	Whitley	67.8°F	+3.6°F	12 of 132	Much warmer than normal
87	Adams	68.6°F	+3.5°F	9 of 132	Much warmer than normal
88	Kosciusko	67.7°F	+3.5°F	10 of 132	Much warmer than normal
89	Allen	68.0°F	+3.4°F	12 of 132	Much warmer than normal
90	Elkhart	67.2°F	+3.4°F	11 of 132	Much warmer than normal
91	LaPorte	67.5°F	+3.3°F	18 of 132	Warmer than normal
92	St. Joseph	67.2°F	+3.3°F	12 of 132	Much warmer than normal

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/topics/climate/us-in.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-in.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?