Average September Temperature in Grand Junction by Year

This page contains a list of the average monthly high and low temperatures in Grand Junction, Colorado for the month of September each year between 1900 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in Grand Junction?

1979 was the warmest September in the history of Grand Junction, Colorado. The average daily high temperature was 86.7 °F, and the average low was 57.3 °F.

What Was the Coldest September Ever in Grand Junction?

1961 was the coolest September in the history of Grand Junction, Colorado. The average daily high temperature was 70.8 °F, and the average low was 47.0 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	13	84.4	55.1
2022	4	85.5	56.9
2021	28	83.6	54.5
2020	69	82.9	51.0
2019	24	84.8	53.6
2018	2	86.6	57.1
2017	52	81.3	53.7
2016	60	81.7	52.8
2015	30	83.6	54.2
2014	59	81.5	53.2
2013	72	78.2	55.4
2012	58	82.4	52.3
2011	36	82.8	54.0
2010	22	85.5	53.0
2009	49	82.5	52.9
2008	80	82.0	51.0
2007	54	81.5	53.5
2006	122	75.3	47.5
2005	70	80.9	52.9
2004	103	77.8	51.4
2003	99	80.9	49.7
2002	94	78.0	53.2
2001	16	85.7	53.6
2000	63	82.1	52.2
1999	113	77.4	49.5
1998	9	83.8	56.1
1997	82	78.0	54.8
1996	119	75.9	50.0
1995	35	82.5	54.4
1994	38	82.8	53.7
1993	89	81.1	50.7
1992	48	82.5	52.9
1991	79	79.9	53.1
1990	15	83.1	56.3
1989	37	82.8	53.7
1988	107	78.6	50.3
1987	84	81.6	50.7
1986	118	74.4	52.0
1985	121	74.8	49.8
1984	40	81.3	55.2
1983	3	85.4	57.4
1982	56	78.6	56.3
1981	26	82.5	55.8
1980	42	83.2	52.6
1979	1	86.7	57.3
1978	92	80.7	50.7
1977	7	84.9	55.5
1976	71	80.8	52.9
1975	64	82.2	52.0
1974	81	82.4	50.4
1973	91	80.6	50.8
1972	41	81.7	54.4
1971	117	78.6	47.7
1970	110	78.9	49.2
1969	20	83.4	55.2
1968	109	79.5	48.9
1967	55	81.9	53.1
1966	27	83.8	54.3
1965	116	75.9	50.8
1964	76	81.2	52.0
1963	14	84.0	55.5
1962	57	81.4	53.4
1961	124	70.8	47.0
1960	25	82.8	55.6
1959	104	77.1	52.0
1958	65	80.0	54.3
1957	100	80.0	50.4
1956	6	86.2	54.9
1955	12	84.1	55.6
1954	67	79.1	55.1
1953	23	84.4	54.0
1952	32	83.1	54.1
1951	83	81.4	51.1
1950	85	78.3	54.0
1949	53	82.7	52.4
1948	17	84.7	54.5
1947	10	84.3	55.6
1946	50	83.0	52.4
1945	86	80.1	52.0
1944	21	84.1	54.5
1943	18	83.9	55.0
1942	66	81.7	52.5
1941	114	75.8	51.1
1940	44	78.8	57.0
1939	43	79.5	56.3
1938	39	80.6	55.8
1937	19	82.8	56.0
1936	78	80.8	52.3
1935	33	82.1	55.1
1934	88	80.4	51.4
1933	5	84.4	57.9
1932	61	82.0	52.5
1931	29	81.8	56.2
1930	97	78.2	52.9
1929	102	76.5	52.9
1928	34	83.0	54.1
1927	98	77.2	53.4
1926	77	81.2	52.0
1925	93	77.6	53.7
1924	106	78.4	50.6
1923	111	76.6	51.4
1922	8	83.9	56.5
1921	51	82.5	52.7
1920	108	77.8	50.9
1919	31	81.1	56.2
1918	75	79.8	53.5
1917	73	79.6	53.8
1916	96	79.2	51.8
1915	95	77.8	53.3
1914	45	80.8	54.8
1913	112	76.2	50.8
1912	123	74.0	46.2
1911	47	79.7	55.7
1910	11	83.4	56.3
1909	105	77.1	52.0
1908	87	79.4	52.6
1907	74	79.8	53.5
1906	101	78.2	51.6
1905	62	80.5	53.9
1904	46	81.4	54.2
1903	120	76.4	48.8
1902	90	81.4	50.0
1901	68	82.6	51.4
1900	115	75.9	50.9

Weather Station Details

Years	Station	Coordinates
1900–2024	Grand Junction Walker Field	location