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Topics / Climate / United States / Wisconsin

Was September normal in Wisconsin?

September 2026 · 72 counties · data family: climatedata.dev

Much warmer than normal

62.8°FStatewide average temperature, September 2026

+3.3°F against the 1991–2020 normal of 59.5°F
11th warmest September of 132 since 1895
Of 72 counties: 52 much warmer, 20 warmer
Furthest above normal: Jackson County (+4.9°F); least: Winnebago County (+2.0°F)
Precipitation 4.38 in, 122% of normal: wetter than normal

Every Wisconsin county, September 2026September 2026 was warmer than normal in every county with a figure: 52 much warmer, 20 warmer; furthest above normal Jackson County (+4.9°F), least Winnebago County (+2.0°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 10
+3 to +4°F 39
+2 to +3°F 23
+1 to +2°F 0
within 1°F 0
−1 to −2°F 0

Much warmer than normal 52
Warmer than normal 20
Near normal 0
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Wisconsin statewideSeptember 2026 averaged 62.8°F, +3.3°F against the 1991–2020 normal: the 11th warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	62.8°F
2025	62.3°F
2024	63.9°F
2023	63.2°F
2022	60.4°F
2021	61.2°F
2020	57.3°F
2019	62.0°F
2018	61.2°F
2017	62.2°F
2016	62.6°F
2015	64.7°F
2014	58.2°F
2013	60.8°F
2012	57.7°F
2011	57.3°F
2010	56.9°F
2009	61.4°F
2008	60.5°F
2007	61.1°F
2006	56.4°F
2005	63.3°F
2004	63.1°F
2003	59.4°F
2002	61.6°F
2001	57.3°F
2000	58.1°F
1999	57.8°F
1998	63.1°F
1997	59.4°F
1996	58.8°F
1995	56.4°F
1994	61.1°F
1993	52.5°F
1992	56.4°F
1991	56.4°F
1990	60.3°F
1989	57.3°F
1988	59.3°F
1987	59.2°F
1986	58.1°F
1985	58.0°F
1984	55.9°F
1983	59.1°F
1982	56.7°F
1981	56.2°F
1980	57.2°F
1979	59.3°F
1978	61.8°F
1977	58.1°F
1976	56.6°F
1975	53.9°F
1974	53.2°F
1973	57.9°F
1972	56.8°F
1971	60.2°F
1970	58.4°F
1969	58.1°F
1968	58.4°F
1967	56.7°F
1966	56.9°F
1965	54.0°F
1964	56.8°F
1963	58.6°F
1962	55.0°F
1961	58.7°F
1960	59.8°F
1959	59.6°F
1958	58.9°F
1957	56.0°F
1956	55.2°F
1955	59.0°F
1954	57.5°F
1953	58.4°F
1952	58.5°F
1951	54.5°F
1950	57.2°F
1949	54.5°F
1948	62.2°F
1947	59.8°F
1946	57.4°F
1945	57.1°F
1944	59.0°F
1943	54.2°F
1942	55.6°F
1941	60.6°F
1940	59.8°F
1939	60.9°F
1938	58.0°F
1937	59.0°F
1936	61.4°F
1935	57.5°F
1934	56.3°F
1933	62.9°F
1932	56.8°F
1931	64.4°F
1930	59.2°F
1929	57.3°F
1928	54.5°F
1927	60.7°F
1926	55.5°F
1925	61.5°F
1924	53.6°F
1923	58.5°F
1922	60.9°F
1921	61.8°F
1920	61.3°F
1919	60.1°F
1918	51.8°F
1917	56.0°F
1916	56.0°F
1915	58.3°F
1914	58.3°F
1913	58.0°F
1912	58.6°F
1911	57.4°F
1910	57.1°F
1909	57.2°F
1908	63.7°F
1907	56.6°F
1906	62.6°F
1905	60.4°F
1904	57.2°F
1903	56.7°F
1902	55.2°F
1901	57.4°F
1900	59.6°F
1899	55.2°F
1898	61.0°F
1897	63.6°F
1896	54.1°F
1895	62.0°F

All 72 counties, September 2026

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


1	Jackson	65.0°F	+4.9°F	3 of 132	Much warmer than normal
2	Clark	63.3°F	+4.5°F	5 of 132	Much warmer than normal
3	Portage	64.0°F	+4.4°F	4 of 132	Much warmer than normal
4	Monroe	64.5°F	+4.3°F	7 of 132	Much warmer than normal
5	Wood	63.6°F	+4.1°F	8 of 132	Much warmer than normal
6	Columbia	65.5°F	+4.0°F	5 of 132	Much warmer than normal
7	Iron	60.0°F	+4.0°F	8 of 132	Much warmer than normal
8	Price	60.7°F	+4.0°F	9 of 132	Much warmer than normal
9	Rusk	62.0°F	+4.0°F	7 of 132	Much warmer than normal
10	Sawyer	60.7°F	+4.0°F	8 of 132	Much warmer than normal
11	Dane	65.9°F	+3.9°F	6 of 132	Much warmer than normal
12	Taylor	61.5°F	+3.9°F	7 of 132	Much warmer than normal
13	Eau Claire	63.7°F	+3.8°F	8 of 132	Much warmer than normal
14	Lafayette	66.0°F	+3.8°F	7 of 132	Much warmer than normal
15	Pierce	64.6°F	+3.8°F	9 of 132	Much warmer than normal
16	Waupaca	64.0°F	+3.8°F	6 of 132	Much warmer than normal
17	Ashland	60.4°F	+3.7°F	9 of 132	Much warmer than normal
18	Chippewa	62.8°F	+3.7°F	9 of 132	Much warmer than normal
19	Green	66.3°F	+3.7°F	7 of 132	Much warmer than normal
20	Marathon	62.1°F	+3.7°F	9 of 132	Much warmer than normal
21	Marquette	64.8°F	+3.7°F	8 of 132	Much warmer than normal
22	Grant	66.1°F	+3.6°F	9 of 132	Much warmer than normal
23	Juneau	63.9°F	+3.6°F	9 of 132	Much warmer than normal
24	Rock	66.5°F	+3.6°F	9 of 132	Much warmer than normal
25	Vilas	59.3°F	+3.6°F	10 of 132	Much warmer than normal
26	Washburn	61.4°F	+3.6°F	11 of 132	Much warmer than normal
27	Adams	63.9°F	+3.5°F	9 of 132	Much warmer than normal
28	Richland	65.0°F	+3.5°F	10 of 132	Much warmer than normal
29	Crawford	65.6°F	+3.4°F	13 of 132	Much warmer than normal
30	Oneida	59.8°F	+3.4°F	10 of 132	Much warmer than normal
31	Vernon	64.4°F	+3.4°F	13 of 132	Much warmer than normal
32	Waushara	63.9°F	+3.4°F	13 of 132	Much warmer than normal
33	Dodge	64.7°F	+3.3°F	13 of 132	Much warmer than normal
34	Kenosha	66.6°F	+3.3°F	14 of 132	Warmer than normal
35	Trempealeau	64.4°F	+3.3°F	13 of 132	Much warmer than normal
36	Buffalo	64.6°F	+3.2°F	14 of 132	Warmer than normal
37	Green Lake	64.4°F	+3.2°F	13 of 132	Much warmer than normal
38	Iowa	64.9°F	+3.2°F	12 of 132	Much warmer than normal
39	La Crosse	64.8°F	+3.2°F	15 of 132	Warmer than normal
40	Lincoln	60.6°F	+3.2°F	10 of 132	Much warmer than normal
41	Pepin	64.5°F	+3.2°F	12 of 132	Much warmer than normal
42	Dunn	63.4°F	+3.1°F	13 of 132	Much warmer than normal
43	Racine	66.0°F	+3.1°F	17 of 132	Warmer than normal
44	Barron	61.8°F	+3.0°F	14 of 132	Warmer than normal
45	Jefferson	65.4°F	+3.0°F	14 of 132	Warmer than normal
46	Outagamie	63.6°F	+3.0°F	12 of 132	Much warmer than normal
47	Sauk	64.3°F	+3.0°F	12 of 132	Much warmer than normal
48	Shawano	62.2°F	+3.0°F	12 of 132	Much warmer than normal
49	St. Croix	63.5°F	+3.0°F	12 of 132	Much warmer than normal
50	Bayfield	59.5°F	+2.8°F	13 of 132	Much warmer than normal
51	Langlade	59.7°F	+2.8°F	11 of 132	Much warmer than normal
52	Walworth	65.4°F	+2.8°F	18 of 132	Warmer than normal
53	Washington	63.9°F	+2.8°F	13 of 132	Much warmer than normal
54	Waukesha	65.0°F	+2.8°F	15 of 132	Warmer than normal
55	Burnett	61.7°F	+2.7°F	15 of 132	Warmer than normal
56	Douglas	59.9°F	+2.7°F	13 of 132	Much warmer than normal
57	Kewaunee	62.5°F	+2.7°F	12 of 132	Much warmer than normal
58	Menominee	61.1°F	+2.7°F	13 of 132	Much warmer than normal
59	Brown	62.9°F	+2.6°F	13 of 132	Much warmer than normal
60	Door	62.1°F	+2.6°F	14 of 132	Warmer than normal
61	Forest	58.5°F	+2.6°F	13 of 132	Much warmer than normal
62	Manitowoc	63.0°F	+2.6°F	13 of 132	Much warmer than normal
63	Florence	58.8°F	+2.5°F	14 of 132	Warmer than normal
64	Marinette	60.6°F	+2.5°F	15 of 132	Warmer than normal
65	Milwaukee	65.4°F	+2.5°F	21 of 132	Warmer than normal
66	Oconto	61.3°F	+2.5°F	14 of 132	Warmer than normal
67	Ozaukee	64.3°F	+2.5°F	17 of 132	Warmer than normal
68	Calumet	63.1°F	+2.3°F	17 of 132	Warmer than normal
69	Sheboygan	63.3°F	+2.3°F	17 of 132	Warmer than normal
70	Polk	61.9°F	+2.2°F	18 of 132	Warmer than normal
71	Fond du Lac	63.1°F	+2.1°F	23 of 132	Warmer than normal
72	Winnebago	63.2°F	+2.0°F	21 of 132	Warmer than normal

Get this data

This page's numbers, as JSON:

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