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Topics / Climate / United States / Tennessee

Was September normal in Tennessee?

September 2026 · 95 counties · data family: climatedata.dev

Much warmer than normal

77.0°FStatewide average temperature, September 2026

+6.6°F against the 1991–2020 normal of 70.4°F
2nd warmest September of 132 since 1895
Of 95 counties: 95 much warmer
Furthest above normal: Montgomery County (+8.4°F); least: Washington County (+4.0°F)
Precipitation 1.34 in, 35% of normal: much drier than normal

Every Tennessee county, September 2026September 2026 was warmer than normal in every county with a figure: 95 much warmer; furthest above normal Montgomery County (+8.4°F), least Washington County (+4.0°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 95
+1 to +2°F 0
within 1°F 0
−1 to −2°F 0

Much warmer than normal 95
Warmer than normal 0
Near normal 0
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Tennessee statewideSeptember 2026 averaged 77.0°F, +6.6°F against the 1991–2020 normal: the 2nd warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	77.0°F
2025	71.4°F
2024	71.4°F
2023	70.9°F
2022	69.4°F
2021	69.7°F
2020	69.9°F
2019	76.4°F
2018	74.9°F
2017	69.1°F
2016	74.1°F
2015	70.9°F
2014	70.7°F
2013	70.7°F
2012	69.1°F
2011	68.1°F
2010	71.6°F
2009	70.6°F
2008	71.2°F
2007	73.0°F
2006	67.2°F
2005	72.6°F
2004	69.6°F
2003	68.1°F
2002	73.3°F
2001	67.6°F
2000	69.6°F
1999	69.3°F
1998	74.4°F
1997	69.6°F
1996	67.5°F
1995	68.2°F
1994	66.9°F
1993	68.3°F
1992	68.6°F
1991	70.2°F
1990	71.4°F
1989	68.4°F
1988	69.7°F
1987	69.3°F
1986	72.3°F
1985	68.3°F
1984	67.1°F
1983	69.7°F
1982	67.5°F
1981	66.8°F
1980	73.3°F
1979	68.3°F
1978	72.8°F
1977	71.8°F
1976	66.6°F
1975	66.2°F
1974	65.4°F
1973	72.6°F
1972	72.2°F
1971	71.9°F
1970	73.9°F
1969	68.0°F
1968	67.8°F
1967	65.1°F
1966	67.7°F
1965	70.8°F
1964	69.1°F
1963	68.4°F
1962	68.4°F
1961	70.8°F
1960	71.1°F
1959	71.1°F
1958	69.7°F
1957	70.1°F
1956	67.9°F
1955	73.0°F
1954	73.8°F
1953	70.0°F
1952	67.8°F
1951	69.6°F
1950	67.5°F
1949	66.0°F
1948	69.3°F
1947	71.7°F
1946	68.6°F
1945	72.6°F
1944	70.2°F
1943	66.7°F
1942	68.4°F
1941	73.6°F
1940	67.7°F
1939	74.3°F
1938	70.3°F
1937	68.6°F
1936	74.3°F
1935	70.0°F
1934	69.8°F
1933	75.1°F
1932	69.8°F
1931	75.3°F
1930	72.8°F
1929	69.9°F
1928	66.6°F
1927	72.3°F
1926	75.2°F
1925	78.8°F
1924	66.2°F
1923	70.5°F
1922	72.6°F
1921	76.5°F
1920	71.6°F
1919	71.0°F
1918	64.4°F
1917	68.4°F
1916	68.2°F
1915	72.1°F
1914	69.5°F
1913	70.1°F
1912	72.6°F
1911	75.9°F
1910	72.9°F
1909	68.9°F
1908	70.5°F
1907	70.0°F
1906	73.7°F
1905	71.2°F
1904	71.7°F
1903	68.8°F
1902	67.4°F
1901	67.9°F
1900	74.6°F
1899	68.6°F
1898	72.8°F
1897	72.1°F
1896	69.6°F
1895	73.6°F

All 95 counties, September 2026

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


1	Montgomery	79.4°F	+8.4°F	1 of 132	Much warmer than normal
2	Shelby	82.3°F	+8.4°F	1 of 132	Much warmer than normal
3	Tipton	81.5°F	+8.4°F	1 of 132	Much warmer than normal
4	Lauderdale	80.9°F	+8.3°F	1 of 132	Much warmer than normal
5	Stewart	79.3°F	+8.3°F	1 of 132	Much warmer than normal
6	Weakley	79.5°F	+8.3°F	1 of 132	Much warmer than normal
7	Houston	78.9°F	+8.1°F	1 of 132	Much warmer than normal
8	Obion	79.3°F	+8.1°F	2 of 132	Much warmer than normal
9	Henry	79.0°F	+8.0°F	1 of 132	Much warmer than normal
10	Dyer	79.9°F	+7.9°F	2 of 132	Much warmer than normal
11	Lake	79.6°F	+7.9°F	1 of 132	Much warmer than normal
12	Cheatham	78.9°F	+7.8°F	2 of 132	Much warmer than normal
13	Davidson	79.2°F	+7.8°F	2 of 132	Much warmer than normal
14	Dickson	78.1°F	+7.7°F	2 of 132	Much warmer than normal
15	Gibson	79.2°F	+7.7°F	2 of 132	Much warmer than normal
16	Benton	78.8°F	+7.6°F	1 of 132	Much warmer than normal
17	Carroll	78.8°F	+7.6°F	2 of 132	Much warmer than normal
18	Haywood	80.1°F	+7.6°F	2 of 132	Much warmer than normal
19	Williamson	78.3°F	+7.6°F	2 of 132	Much warmer than normal
20	Crockett	79.6°F	+7.5°F	2 of 132	Much warmer than normal
21	Fayette	80.4°F	+7.5°F	2 of 132	Much warmer than normal
22	Humphreys	78.2°F	+7.5°F	2 of 132	Much warmer than normal
23	Robertson	78.0°F	+7.4°F	2 of 132	Much warmer than normal
24	Rutherford	78.6°F	+7.4°F	2 of 132	Much warmer than normal
25	Madison	79.2°F	+7.3°F	2 of 132	Much warmer than normal
26	Sumner	77.9°F	+7.3°F	2 of 132	Much warmer than normal
27	Henderson	78.6°F	+7.2°F	2 of 132	Much warmer than normal
28	Wilson	78.2°F	+7.2°F	2 of 132	Much warmer than normal
29	Chester	78.9°F	+7.1°F	2 of 132	Much warmer than normal
30	Hardeman	79.5°F	+7.1°F	2 of 132	Much warmer than normal
31	McNairy	79.0°F	+6.9°F	2 of 132	Much warmer than normal
32	Trousdale	77.8°F	+6.9°F	2 of 132	Much warmer than normal
33	Decatur	78.4°F	+6.8°F	3 of 132	Much warmer than normal
34	Hickman	77.3°F	+6.8°F	3 of 132	Much warmer than normal
35	Macon	76.8°F	+6.8°F	2 of 132	Much warmer than normal
36	Scott	73.9°F	+6.8°F	2 of 132	Much warmer than normal
37	Bedford	77.5°F	+6.6°F	2 of 132	Much warmer than normal
38	Campbell	74.2°F	+6.6°F	2 of 132	Much warmer than normal
39	Grundy	74.7°F	+6.6°F	2 of 132	Much warmer than normal
40	Maury	77.3°F	+6.6°F	3 of 132	Much warmer than normal
41	Clay	76.4°F	+6.5°F	3 of 132	Much warmer than normal
42	Coffee	76.3°F	+6.5°F	2 of 132	Much warmer than normal
43	Hardin	78.4°F	+6.5°F	3 of 132	Much warmer than normal
44	Marshall	77.3°F	+6.5°F	2 of 132	Much warmer than normal
45	Pickett	75.2°F	+6.5°F	2 of 132	Much warmer than normal
46	Anderson	76.0°F	+6.4°F	2 of 132	Much warmer than normal
47	Cannon	76.5°F	+6.4°F	3 of 132	Much warmer than normal
48	Giles	77.3°F	+6.4°F	3 of 132	Much warmer than normal
49	Lincoln	77.7°F	+6.4°F	3 of 132	Much warmer than normal
50	Moore	77.1°F	+6.4°F	2 of 132	Much warmer than normal
51	Morgan	74.4°F	+6.4°F	2 of 132	Much warmer than normal
52	Perry	77.5°F	+6.4°F	3 of 132	Much warmer than normal
53	Smith	77.2°F	+6.4°F	3 of 132	Much warmer than normal
54	Warren	76.0°F	+6.4°F	3 of 132	Much warmer than normal
55	Fentress	73.6°F	+6.3°F	3 of 132	Much warmer than normal
56	Jackson	76.6°F	+6.3°F	3 of 132	Much warmer than normal
57	Marion	76.5°F	+6.3°F	3 of 132	Much warmer than normal
58	Overton	75.0°F	+6.3°F	3 of 132	Much warmer than normal
59	Sequatchie	75.4°F	+6.3°F	2 of 132	Much warmer than normal
60	Lawrence	76.7°F	+6.2°F	4 of 132	Much warmer than normal
61	Roane	76.9°F	+6.2°F	2 of 132	Much warmer than normal
62	Wayne	76.9°F	+6.2°F	4 of 132	Much warmer than normal
63	DeKalb	76.4°F	+6.1°F	3 of 132	Much warmer than normal
64	Franklin	76.5°F	+6.1°F	3 of 132	Much warmer than normal
65	Loudon	77.3°F	+6.1°F	2 of 132	Much warmer than normal
66	Putnam	75.2°F	+6.1°F	3 of 132	Much warmer than normal
67	Cumberland	73.2°F	+6.0°F	3 of 132	Much warmer than normal
68	McMinn	77.2°F	+6.0°F	4 of 132	Much warmer than normal
69	Union	75.2°F	+6.0°F	2 of 132	Much warmer than normal
70	Van Buren	74.5°F	+6.0°F	3 of 132	Much warmer than normal
71	Bledsoe	74.8°F	+5.9°F	3 of 132	Much warmer than normal
72	Claiborne	73.9°F	+5.9°F	2 of 132	Much warmer than normal
73	Lewis	76.2°F	+5.9°F	3 of 132	Much warmer than normal
74	Bradley	77.4°F	+5.8°F	6 of 132	Much warmer than normal
75	Hamilton	77.4°F	+5.8°F	6 of 132	Much warmer than normal
76	Meigs	77.1°F	+5.8°F	4 of 132	Much warmer than normal
77	Rhea	76.0°F	+5.8°F	3 of 132	Much warmer than normal
78	White	75.0°F	+5.8°F	4 of 132	Much warmer than normal
79	Knox	76.7°F	+5.7°F	3 of 132	Much warmer than normal
80	Monroe	75.5°F	+5.6°F	4 of 132	Much warmer than normal
81	Grainger	75.0°F	+5.5°F	3 of 132	Much warmer than normal
82	Hancock	73.9°F	+5.5°F	5 of 132	Much warmer than normal
83	Polk	75.6°F	+5.5°F	6 of 132	Much warmer than normal
84	Blount	75.2°F	+5.1°F	6 of 132	Much warmer than normal
85	Hamblen	75.3°F	+5.1°F	6 of 132	Much warmer than normal
86	Jefferson	75.8°F	+5.1°F	7 of 132	Much warmer than normal
87	Hawkins	74.2°F	+4.9°F	7 of 132	Much warmer than normal
88	Cocke	74.0°F	+4.7°F	7 of 132	Much warmer than normal
89	Greene	74.1°F	+4.7°F	7 of 132	Much warmer than normal
90	Johnson	68.1°F	+4.5°F	6 of 132	Much warmer than normal
91	Sevier	72.7°F	+4.4°F	7 of 132	Much warmer than normal
92	Carter	69.5°F	+4.2°F	7 of 132	Much warmer than normal
93	Unicoi	69.4°F	+4.2°F	7 of 132	Much warmer than normal
94	Sullivan	72.3°F	+4.0°F	8 of 132	Much warmer than normal
95	Washington	72.8°F	+4.0°F	8 of 132	Much warmer than normal

Get this data

This page's numbers, as JSON:

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