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Topics / Climate / United States / Colorado

Was September normal in Colorado?

September 2026 · 64 counties · data family: climatedata.dev

Much warmer than normal

62.8°FStatewide average temperature, September 2026

+3.9°F against the 1991–2020 normal of 58.9°F
2nd warmest September of 132 since 1895
Of 64 counties: 61 much warmer, 3 warmer
Furthest above normal: Phillips County (+6.5°F); least: San Juan County (+1.1°F)
Precipitation 2.72 in, 183% of normal: much wetter than normal

Every Colorado county, September 2026September 2026 was warmer than normal in every county with a figure: 61 much warmer, 3 warmer; furthest above normal Phillips County (+6.5°F), least San Juan County (+1.1°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 31
+3 to +4°F 15
+2 to +3°F 10
+1 to +2°F 8
within 1°F 0
−1 to −2°F 0

Much warmer than normal 61
Warmer than normal 3
Near normal 0
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Colorado statewideSeptember 2026 averaged 62.8°F, +3.9°F against the 1991–2020 normal: the 2nd warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	62.8°F
2025	59.3°F
2024	61.7°F
2023	60.5°F
2022	62.5°F
2021	62.4°F
2020	58.8°F
2019	62.9°F
2018	61.9°F
2017	59.1°F
2016	59.7°F
2015	62.6°F
2014	60.0°F
2013	60.7°F
2012	59.5°F
2011	58.5°F
2010	61.2°F
2009	57.6°F
2008	57.3°F
2007	59.7°F
2006	53.5°F
2005	60.2°F
2004	57.7°F
2003	56.7°F
2002	58.4°F
2001	60.3°F
2000	59.4°F
1999	55.4°F
1998	62.5°F
1997	59.8°F
1996	55.7°F
1995	57.4°F
1994	59.1°F
1993	55.3°F
1992	58.6°F
1991	57.5°F
1990	61.2°F
1989	57.6°F
1988	56.3°F
1987	56.7°F
1986	55.2°F
1985	54.3°F
1984	57.0°F
1983	60.2°F
1982	57.3°F
1981	59.5°F
1980	58.6°F
1979	60.0°F
1978	58.4°F
1977	59.7°F
1976	56.9°F
1975	55.6°F
1974	55.1°F
1973	54.8°F
1972	57.0°F
1971	53.8°F
1970	54.9°F
1969	58.8°F
1968	55.5°F
1967	56.9°F
1966	58.0°F
1965	51.9°F
1964	56.9°F
1963	60.9°F
1962	57.4°F
1961	52.5°F
1960	59.4°F
1959	55.7°F
1958	58.8°F
1957	55.3°F
1956	59.7°F
1955	58.6°F
1954	60.1°F
1953	59.3°F
1952	59.0°F
1951	56.4°F
1950	55.8°F
1949	57.8°F
1948	60.6°F
1947	60.2°F
1946	58.0°F
1945	56.0°F
1944	57.9°F
1943	57.4°F
1942	56.3°F
1941	55.6°F
1940	59.5°F
1939	60.4°F
1938	58.6°F
1937	59.4°F
1936	57.2°F
1935	57.8°F
1934	55.4°F
1933	61.1°F
1932	57.0°F
1931	60.7°F
1930	56.7°F
1929	54.6°F
1928	56.8°F
1927	56.2°F
1926	57.0°F
1925	57.6°F
1924	55.6°F
1923	54.8°F
1922	59.6°F
1921	58.1°F
1920	56.0°F
1919	59.8°F
1918	54.8°F
1917	57.4°F
1916	55.4°F
1915	56.1°F
1914	58.7°F
1913	54.0°F
1912	51.0°F
1911	59.5°F
1910	59.4°F
1909	56.2°F
1908	58.2°F
1907	57.1°F
1906	56.1°F
1905	58.4°F
1904	57.4°F
1903	54.8°F
1902	55.5°F
1901	56.5°F
1900	55.7°F
1899	58.6°F
1898	55.5°F
1897	60.8°F
1896	56.5°F
1895	58.8°F

All 64 counties, September 2026

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


1	Phillips	70.7°F	+6.5°F	1 of 132	Much warmer than normal
2	Kit Carson	71.0°F	+6.3°F	1 of 132	Much warmer than normal
3	Sedgwick	70.4°F	+6.3°F	1 of 132	Much warmer than normal
4	Cheyenne	71.6°F	+6.2°F	1 of 132	Much warmer than normal
5	Yuma	71.3°F	+6.2°F	1 of 132	Much warmer than normal
6	Prowers	73.8°F	+6.0°F	2 of 132	Much warmer than normal
7	Logan	69.9°F	+5.9°F	1 of 132	Much warmer than normal
8	Kiowa	72.4°F	+5.8°F	2 of 132	Much warmer than normal
9	Baca	72.7°F	+5.7°F	3 of 132	Much warmer than normal
10	Denver	69.4°F	+5.6°F	1 of 132	Much warmer than normal
11	Crowley	71.5°F	+5.5°F	2 of 132	Much warmer than normal
12	Broomfield	68.8°F	+5.4°F	1 of 132	Much warmer than normal
13	Washington	69.4°F	+5.4°F	1 of 132	Much warmer than normal
14	Arapahoe	67.9°F	+5.2°F	1 of 132	Much warmer than normal
15	Morgan	69.0°F	+5.2°F	1 of 132	Much warmer than normal
16	Adams	68.5°F	+5.1°F	1 of 132	Much warmer than normal
17	Bent	72.9°F	+5.1°F	3 of 132	Much warmer than normal
18	El Paso	65.6°F	+5.1°F	2 of 132	Much warmer than normal
19	Elbert	65.9°F	+5.1°F	2 of 132	Much warmer than normal
20	Lincoln	68.5°F	+5.1°F	2 of 132	Much warmer than normal
21	Teller	57.4°F	+5.1°F	1 of 132	Much warmer than normal
22	Douglas	64.5°F	+5.0°F	1 of 132	Much warmer than normal
23	Otero	72.2°F	+5.0°F	2 of 132	Much warmer than normal
24	Pueblo	70.3°F	+5.0°F	2 of 132	Much warmer than normal
25	Weld	67.4°F	+5.0°F	1 of 132	Much warmer than normal
26	Jefferson	63.2°F	+4.7°F	1 of 132	Much warmer than normal
27	Custer	57.9°F	+4.4°F	2 of 132	Much warmer than normal
28	Fremont	62.5°F	+4.4°F	2 of 132	Much warmer than normal
29	Larimer	59.2°F	+4.4°F	1 of 132	Much warmer than normal
30	Las Animas	68.1°F	+4.3°F	3 of 132	Much warmer than normal
31	Boulder	61.1°F	+4.1°F	1 of 132	Much warmer than normal
32	Park	54.3°F	+3.8°F	2 of 132	Much warmer than normal
33	Alamosa	59.8°F	+3.7°F	2 of 132	Much warmer than normal
34	Huerfano	62.6°F	+3.6°F	5 of 132	Much warmer than normal
35	Gilpin	54.7°F	+3.4°F	7 of 132	Much warmer than normal
36	Rio Grande	55.7°F	+3.4°F	4 of 132	Much warmer than normal
37	Clear Creek	52.4°F	+3.3°F	7 of 132	Much warmer than normal
38	Grand	53.4°F	+3.2°F	5 of 132	Much warmer than normal
39	Eagle	55.5°F	+3.1°F	5 of 132	Much warmer than normal
40	Moffat	61.0°F	+3.1°F	7 of 132	Much warmer than normal
41	Rio Blanco	60.9°F	+3.1°F	7 of 132	Much warmer than normal
42	Saguache	55.3°F	+3.1°F	5 of 132	Much warmer than normal
43	Summit	51.1°F	+3.1°F	6 of 132	Much warmer than normal
44	Conejos	55.7°F	+3.0°F	4 of 132	Much warmer than normal
45	Garfield	59.6°F	+3.0°F	7 of 132	Much warmer than normal
46	Routt	56.0°F	+3.0°F	6 of 132	Much warmer than normal
47	Pitkin	53.2°F	+2.7°F	6 of 132	Much warmer than normal
48	Costilla	57.0°F	+2.6°F	8 of 132	Much warmer than normal
49	Jackson	52.3°F	+2.6°F	8 of 132	Much warmer than normal
50	Mesa	63.4°F	+2.6°F	7 of 132	Much warmer than normal
51	Chaffee	53.1°F	+2.5°F	8 of 132	Much warmer than normal
52	Gunnison	54.0°F	+2.5°F	5 of 132	Much warmer than normal
53	Lake	49.2°F	+2.5°F	10 of 132	Much warmer than normal
54	Montrose	63.2°F	+2.4°F	8 of 132	Much warmer than normal
55	Ouray	56.4°F	+2.2°F	10 of 132	Much warmer than normal
56	Delta	62.2°F	+2.1°F	10 of 132	Much warmer than normal
57	Dolores	57.6°F	+1.9°F	9 of 132	Much warmer than normal
58	Montezuma	63.5°F	+1.9°F	9 of 132	Much warmer than normal
59	San Miguel	59.3°F	+1.9°F	11 of 132	Much warmer than normal
60	Mineral	50.5°F	+1.8°F	10 of 132	Much warmer than normal
61	Archuleta	57.8°F	+1.4°F	20 of 132	Warmer than normal
62	Hinsdale	49.2°F	+1.4°F	13 of 132	Much warmer than normal
63	La Plata	58.8°F	+1.4°F	14 of 132	Warmer than normal
64	San Juan	47.3°F	+1.1°F	17 of 132	Warmer than normal

Get this data

This page's numbers, as JSON:

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