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Topics / Climate / the world's capitals / United States

Was September normal in the contiguous United States?

September 2026 · 50 states · data family: climatedata.dev

Much warmer than normal

69.4°FContiguous US average temperature, September 2026

+3.5°F against the 1991–2020 normal of 66.0°F
1st warmest September of 132 since 1895
Of 50 states: 33 much warmer, 12 warmer, 5 near normal
Furthest above normal: Oklahoma (+9.9°F); furthest below: Oregon (-2.9°F)
Precipitation 2.69 in, 105% of normal: wetter than normal

Every state, September 2026September 2026 by state: 33 much warmer, 12 warmer, 5 near normal; furthest above normal Oklahoma (+9.9°F), furthest below Oregon (-2.9°F).Choose a state to see its answer. The colour shows how far each state was from its own 1991–2020 normal.

+4°F or more 16
+3 to +4°F 9
+2 to +3°F 8
+1 to +2°F 4
within 1°F 10
−1 to −2°F 2
−2 to −3°F 1
no data

Much warmer than normal 33
Warmer than normal 12
Near normal 5
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, contiguous USSeptember 2026 averaged 69.4°F, +3.5°F against the 1991–2020 normal: the 1st warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	69.4°F
2025	68.0°F
2024	68.6°F
2023	67.8°F
2022	68.0°F
2021	67.8°F
2020	65.9°F
2019	68.4°F
2018	67.5°F
2017	66.3°F
2016	67.1°F
2015	68.5°F
2014	66.2°F
2013	66.9°F
2012	66.3°F
2011	66.1°F
2010	66.5°F
2009	66.4°F
2008	65.2°F
2007	66.4°F
2006	63.3°F
2005	67.3°F
2004	65.6°F
2003	64.9°F
2002	66.8°F
2001	65.7°F
2000	65.5°F
1999	64.3°F
1998	69.0°F
1997	66.4°F
1996	63.5°F
1995	64.7°F
1994	65.5°F
1993	63.3°F
1992	64.7°F
1991	64.9°F
1990	67.3°F
1989	64.1°F
1988	64.6°F
1987	65.2°F
1986	63.7°F
1985	62.7°F
1984	63.1°F
1983	65.6°F
1982	64.0°F
1981	64.9°F
1980	66.2°F
1979	66.1°F
1978	65.8°F
1977	65.9°F
1976	64.2°F
1975	62.9°F
1974	62.3°F
1973	64.4°F
1972	64.4°F
1971	64.3°F
1970	64.6°F
1969	65.5°F
1968	63.9°F
1967	64.0°F
1966	64.5°F
1965	61.8°F
1964	63.7°F
1963	66.3°F
1962	64.2°F
1961	63.4°F
1960	66.4°F
1959	64.7°F
1958	65.4°F
1957	64.2°F
1956	65.1°F
1955	65.9°F
1954	66.4°F
1953	66.2°F
1952	65.9°F
1951	64.1°F
1950	63.5°F
1949	63.7°F
1948	66.1°F
1947	66.5°F
1946	64.5°F
1945	65.0°F
1944	65.3°F
1943	64.3°F
1942	63.6°F
1941	64.5°F
1940	65.3°F
1939	67.3°F
1938	66.6°F
1937	65.7°F
1936	66.3°F
1935	64.8°F
1934	63.8°F
1933	67.7°F
1932	64.7°F
1931	68.1°F
1930	65.7°F
1929	63.4°F
1928	63.3°F
1927	65.0°F
1926	64.1°F
1925	66.7°F
1924	62.7°F
1923	65.0°F
1922	67.3°F
1921	66.5°F
1920	65.4°F
1919	65.6°F
1918	61.9°F
1917	64.1°F
1916	63.5°F
1915	64.4°F
1914	64.6°F
1913	63.6°F
1912	62.7°F
1911	66.1°F
1910	65.7°F
1909	64.4°F
1908	65.6°F
1907	64.2°F
1906	66.2°F
1905	65.9°F
1904	64.9°F
1903	62.7°F
1902	62.7°F
1901	63.2°F
1900	65.1°F
1899	64.8°F
1898	65.4°F
1897	66.4°F
1896	62.9°F
1895	65.5°F

All 50 states, September 2026

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


1	Oklahoma	82.8°F	+9.9°F	1 of 132	Much warmer than normal
2	Missouri	77.0°F	+8.8°F	1 of 132	Much warmer than normal
3	Arkansas	81.6°F	+8.6°F	1 of 132	Much warmer than normal
4	Kansas	77.3°F	+8.5°F	1 of 132	Much warmer than normal
5	Texas	84.1°F	+7.8°F	1 of 132	Much warmer than normal
6	Tennessee	77.0°F	+6.6°F	2 of 132	Much warmer than normal
7	Kentucky	75.3°F	+6.5°F	2 of 132	Much warmer than normal
8	Illinois	73.0°F	+6.2°F	1 of 132	Much warmer than normal
9	Mississippi	81.1°F	+5.6°F	3 of 132	Much warmer than normal
10	Indiana	71.5°F	+5.5°F	2 of 132	Much warmer than normal
11	Nebraska	69.2°F	+5.4°F	3 of 132	Much warmer than normal
12	Iowa	68.3°F	+4.6°F	5 of 132	Much warmer than normal
13	Louisiana	82.3°F	+4.5°F	1 of 132	Much warmer than normal
14	Alabama	79.1°F	+4.3°F	6 of 132	Much warmer than normal
15	New Mexico	70.1°F	+4.3°F	1 of 132	Much warmer than normal
16	South Dakota	65.6°F	+4.1°F	9 of 132	Much warmer than normal
17	Colorado	62.8°F	+3.9°F	2 of 132	Much warmer than normal
18	North Dakota	61.7°F	+3.8°F	13 of 132	Much warmer than normal
19	Ohio	68.8°F	+3.7°F	9 of 132	Much warmer than normal
20	Virginia	71.6°F	+3.7°F	9 of 132	Much warmer than normal
21	West Virginia	68.8°F	+3.7°F	8 of 132	Much warmer than normal
22	Minnesota	62.1°F	+3.5°F	10 of 132	Much warmer than normal
23	North Carolina	74.1°F	+3.3°F	9 of 132	Much warmer than normal
24	Wisconsin	62.8°F	+3.3°F	11 of 132	Much warmer than normal
25	Wyoming	58.4°F	+3.0°F	7 of 132	Much warmer than normal
26	Georgia	77.6°F	+2.8°F	10 of 132	Much warmer than normal
27	South Carolina	77.0°F	+2.8°F	15 of 132	Warmer than normal
28	Maryland	70.5°F	+2.3°F	13 of 132	Much warmer than normal
29	Utah	64.4°F	+2.2°F	8 of 132	Much warmer than normal
30	Hawaii	71.1°F	+2.1°F	2 of 36	Much warmer than normal
31	Delaware	71.1°F	+2.0°F	13 of 132	Much warmer than normal
32	Michigan	61.9°F	+2.0°F	19 of 132	Warmer than normal
33	Pennsylvania	64.8°F	+2.0°F	16 of 132	Warmer than normal
34	Montana	57.3°F	+1.6°F	23 of 132	Warmer than normal
35	Arizona	75.1°F	+1.5°F	9 of 132	Much warmer than normal
36	New Jersey	68.2°F	+1.3°F	13 of 132	Much warmer than normal
37	Alaska	42.5°F	+1.1°F	25 of 102	Warmer than normal
38	Florida	80.7°F	+0.7°F	11 of 132	Much warmer than normal
39	New York	60.8°F	+0.4°F	36 of 132	Warmer than normal
40	Nevada	63.7°F	+0.2°F	37 of 132	Warmer than normal
41	Rhode Island	64.0°F	+0.0°F	27 of 132	Warmer than normal
42	Vermont	57.6°F	−0.2°F	41 of 132	Warmer than normal
43	Connecticut	63.1°F	−0.3°F	41 of 132	Warmer than normal
44	Massachusetts	62.0°F	−0.4°F	35 of 132	Warmer than normal
45	Maine	56.4°F	−0.5°F	37 of 132	Warmer than normal
46	Idaho	55.8°F	−0.6°F	52 of 132	Near normal
47	New Hampshire	57.8°F	−0.6°F	47 of 132	Near normal
48	California	69.6°F	−1.0°F	53 of 132	Near normal
49	Washington	56.7°F	−1.7°F	74 of 132	Near normal
50	Oregon	56.3°F	−2.9°F	88 of 132	Near normal

No figure for 7 states: American Samoa, District of Columbia, Guam, Northern Mariana Islands, Puerto Rico, U.S. Minor Outlying Islands, U.S. Virgin Islands.

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/topics/climate/usa.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/usa.json"

Open the JSON

What this can't tell you

The contiguous US average leaves out Alaska and Hawaii, as NOAA's national series does; both are on the map as states.
No NOAA series for 7 of the registry's states here (American Samoa, District of Columbia, Guam, Northern Mariana Islands, Puerto Rico, U.S. Minor Outlying Islands…).
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'. States 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)
U.S. Census Bureau TIGERweb, states (generalised) (U.S. public domain)
Built 2026-10-26. Download every state's answer (JSON)

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