Grand Junction, CO: September

30 September 2026: September 2026 averaged 70.6°F in Grand Junction, CO, the warmest September since 2024, 7th warmest of 134.

September 2026

Mean temperature: 70.6°F; Warmest since 2024; 7th warmest of 134
Precipitation: 1.58 in; Wettest since 2022; 27th wettest of 134

A normal September in Grand Junction, CO (1991 to 2020): a mean temperature of 67.4°F, between 64.5°F and 69.3°F in eight years of ten and 1.03 in of precipitation, between 0.26 in and 2.52 in in eight years of ten.

The mean temperature of every September in Grand Junction, CO since 1893: 70.6°F in 2026; the highest is 73.4°F, in 2024.

Normal range, 64.5 to 69.3°F

Every year, ranked, as a table

Every September in Grand Junction, CO from 1893 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	70.6	7	82.5	42	58.7	3	1.58	27	0
2025	68.5	38	82.3	50	54.7	38	0.97	52	0
2024	73.4	1	87.8	1	59.1	1	0.27	110	0
2023	69.8	16	84.4	13	55.1	30	0.07	125	0
2022	71.2	5	85.5	7	56.9	9	2.29	15	0
2021	69	31	83.6	25	54.5	39	1.89	20	0
2020	66.9	75	82.9	34	51	108	1.13	43	0
2019	69.2	26	84.8	11	53.6	61	0.26	111	0
2018	71.8	3	86.6	3	57.1	7	trace	131	0
2017	67.5	58	81.3	67	53.7	57	0.74	65	0
2016	67.3	66	81.7	58	52.8	80	0.68	72	0
2015	68.9	33	83.6	25	54.2	47	0.79	62	0
2014	67.4	63	81.5	62	53.2	69	1.84	22	0
2013	66.9	75	78.2	105	55.5	25	3.09	3	0
2012	67.4	63	82.5	42	52.3	88	0.46	90	0
2011	68.4	41	82.8	35	54	51	1.23	39	0
2010	69.3	23	85.5	7	53	73	0.55	84	0
2009	67.7	53	82.5	42	52.9	74	0.43	93	0
2008	66.5	86	82	54	51	108	0.23	116	0
2007	67.5	58	81.5	62	53.5	63	1.99	19	0
2006	61.4	132	75.3	130	47.5	132	1.41	35	0
2005	66.9	75	80.9	74	52.9	74	2.52	8	0
2004	64.6	111	77.8	111	51.4	102	2.00	18	0
2003	65.3	106	80.9	74	49.7	126	1.05	46	0
2002	65.6	101	78	109	53.2	69	2.54	7	0
2001	69.6	19	85.7	6	53.6	61	0.15	118	0
2000	67.2	67	82.1	52	52.2	90	0.60	81	0
1999	63.5	123	77.4	115	49.5	127	1.01	49	0
1998	70	11	83.8	23	56.1	16	1.44	33	0
1997	66.4	88	78	109	54.8	35	2.84	5	0
1996	63	129	75.9	126	50	123	1.53	28	0
1995	68.5	38	82.5	42	54.4	42	0.66	75	0
1994	68.3	42	82.8	35	53.7	57	1.50	31	0
1993	65.9	95	81.1	72	50.7	115	0.41	94	0
1992	67.7	53	82.5	42	52.9	74	0.33	103	0
1991	66.5	86	79.9	87	53.1	71	2.30	14	0
1990	69.7	18	83.1	30	56.3	11	1.23	39	0
1989	68.3	42	82.8	35	53.7	57	0.33	103	0
1988	64.5	112	78.6	100	50.3	121	0.76	64	0
1987	66.2	91	81.6	61	50.7	115	0.13	119	0
1986	63.2	127	74.4	132	52	91	1.52	30	0
1985	62.3	131	74.8	131	49.9	125	1.67	26	0
1984	68.2	44	81.3	67	55.2	28	0.34	102	0
1983	71.4	4	85.3	9	57.5	5	1.11	45	0
1982	67.5	58	78.6	100	56.3	11	2.81	6	0
1981	69.2	26	82.5	42	55.8	19	0.25	114	0
1980	67.9	48	83.2	29	52.6	82	0.58	82	0
1979	72	2	86.7	2	57.3	6	0.01	129	0
1978	65.7	98	80.7	79	50.7	115	0.49	88	0
1977	70.2	9	84.9	10	55.5	25	0.52	85	0
1976	66.9	75	80.8	76	52.9	74	0.67	73	0
1975	67.1	70	82.2	51	52	91	0.16	117	0
1974	66.4	88	82.4	49	50.4	119	0.38	97	0
1973	65.7	98	80.6	81	50.8	112	0.33	103	0
1972	68.1	46	81.7	58	54.4	42	0.72	66	0
1971	63.2	127	78.6	100	47.7	131	0.58	82	0
1970	64.1	119	78.9	97	49.2	128	0.78	63	0
1969	69.3	23	83.4	27	55.2	28	1.45	32	0
1968	64.2	118	79.5	92	48.9	129	0.07	125	0
1967	67.5	58	81.9	56	53.1	71	0.37	100	0
1966	69.1	30	83.8	23	54.3	44	0.26	111	0
1965	63.4	126	75.9	126	50.8	112	2.52	8	0
1964	66.6	81	81.2	70	52	91	0.36	101	0
1963	69.8	16	84	20	55.5	25	0.48	89	0
1962	67.4	63	81.3	67	53.4	66	1.41	35	0
1961	58.9	134	70.8	134	47	133	2.22	16	0
1960	69.2	26	82.8	35	55.6	22	0.65	76	0
1959	64.5	112	77.1	119	52	91	0.82	60	0
1958	67.1	70	80	85	54.3	44	1.34	37	0
1957	65.2	108	80	85	50.4	119	0.09	124	0
1956	70.5	8	86.2	4	54.9	34	0.01	129	0
1955	69.9	13	84.1	18	55.6	22	0.38	97	0
1954	67.1	70	79.1	96	55	32	2.51	10	0
1953	69.2	26	84.4	13	54	51	trace	131	0
1952	68.6	34	83.1	30	54.1	49	0.39	96	0
1951	66.3	90	81.4	64	51.1	106	0.32	106	0
1950	66.1	92	78.3	104	54	51	1.05	46	0
1949	67.5	58	82.7	40	52.4	86	1.72	23	0
1948	69.6	19	84.7	12	54.5	39	0.46	90	0
1947	69.9	13	84.3	16	55.6	22	0.26	111	0
1946	67.7	53	83	32	52.4	86	0.12	120	0
1945	66	93	80.1	84	52	91	0.10	122	0
1944	69.3	23	84.1	18	54.5	39	trace	131	0
1943	69.5	21	83.9	21	55	32	0.31	107	0
1942	67.1	70	81.7	58	52.5	84	0.41	94	0
1941	63.5	123	75.8	129	51.1	106	2.90	4	0
1940	67.9	48	78.8	99	57	8	2.35	13	0
1939	67.9	48	79.5	92	56.3	11	2.37	12	0
1938	68.2	44	80.7	79	55.8	19	2.41	11	0
1937	69.4	22	82.8	35	56	18	0.93	56	0
1936	66.6	81	80.8	76	52.3	88	0.72	66	0
1935	68.6	34	82.1	52	55.1	30	0.82	60	0
1934	65.9	95	80.4	83	51.4	102	0.72	66	0
1933	71.1	6	84.4	13	57.9	4	1.04	48	0
1932	67.2	67	82	54	52.5	84	0.11	121	0
1931	69	31	81.8	57	56.1	16	1.87	21	0
1930	65.5	104	78.2	105	52.9	74	0.70	70	0
1929	64.7	110	76.5	123	52.9	74	2.16	17	0
1928	68.6	34	83	32	54.1	49	0.61	80	0
1927	65.3	106	77.2	118	53.4	66	3.29	2	0
1926	66.6	81	81.2	70	52	91	0.67	73	0
1925	65.6	101	77.6	114	53.7	57	0.52	85	0
1924	64.5	112	78.4	103	50.6	118	0.97	52	0
1923	64	120	76.6	122	51.4	102	0.71	69	0
1922	70.2	9	83.9	21	56.5	10	0.38	97	0
1921	67.6	57	82.5	42	52.7	81	0.04	127	0
1920	64.4	117	77.8	111	50.9	111	0.98	51	0
1919	68.6	34	81.1	72	56.2	15	1.17	42	0
1918	66.6	81	79.8	88	53.5	63	0.97	52	0
1917	66.7	79	79.6	91	53.8	56	1.00	50	0
1916	65.5	104	79.2	95	51.8	99	0.50	87	0
1915	65.6	101	77.8	111	53.3	68	0.95	55	0
1914	67.8	51	80.8	76	54.8	35	0.30	109	0
1913	63.5	123	76.2	125	50.8	112	1.70	24	0
1912	60.1	133	74	133	46.2	134	0.03	128	0
1911	67.7	53	79.7	90	55.7	21	1.30	38	0
1910	69.9	13	83.4	27	56.3	11	0.92	57	0
1909	64.5	112	77.1	119	52	91	1.13	43	0
1908	66	93	79.4	94	52.6	82	0.65	76	0
1907	66.7	79	79.8	88	53.5	63	0.45	92	0
1906	64.9	109	78.2	105	51.6	100	1.43	34	0
1905	67.2	67	80.5	82	53.9	54	1.69	25	0
1904	67.8	51	81.4	64	54.2	47	0.65	76	0
1903	62.6	130	76.4	124	48.8	130	0.69	71	0
1902	65.7	98	81.4	64	50	123	0.85	59	0
1901	67	74	82.6	41	51.4	102	trace	131	0
1900	63.8	121	75.9	126	51	108	1.18	41	1
1899	70	11	86	5	53.9	54	0.31	107	0
1898	64.5	112	77.4	115	51.6	100	0.10	122	0
1897	68.5	38	78.1	108	58.8	2	1.53	28	0
1896	65.9	95	76.9	121	54.8	35	3.78	1	0
1895	68.1	46	84.2	17	51.9	98	0.25	114	0
1894	63.8	121	77.4	115	50.3	121	0.62	79	0
1893	66.6	81	78.9	97	54.3	44	0.87	58	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2024	73.4
1979	72
2018	71.8
1983	71.4
2022	71.2
1933	71.1
2026	70.6
1956	70.5
1977	70.2
1922	70.2

Coldest
Year	Mean, °F
1961	58.9
1912	60.1
2006	61.4
1985	62.3
1903	62.6
1996	63
1986	63.2
1971	63.2
1965	63.4
1999	63.5
More years share the last value

Wettest
Year	Precipitation, in
1896	3.78
1927	3.29
2013	3.09
1941	2.90
1997	2.84
1982	2.81
2002	2.54
2005	2.52
1965	2.52
1954	2.51

Driest
Year	Precipitation, in
2018	trace
1953	trace
1944	trace
1901	trace
1979	0.01
1956	0.01
1912	0.03
1921	0.04
2023	0.07
1968	0.07

The hottest, coldest and wettest days

Hottest day: 91°F; 11 September 2026, 8 September 2026, 4 September 2026
Coldest night: 50°F; 20 September 2026
Wettest day: 0.36 in; 17 September 2026

Every month, season and year

Months

Seasons

Years

Grand Junction, CO the day's answers

All-time records

Every answer in words

September 2026 brought 1.58 in of precipitation in Grand Junction, CO, the wettest September since 2022, 27th wettest of 134.
The hottest day of September 2026 in Grand Junction, CO: 91°F on Friday 11 September 2026, Tuesday 8 September 2026 and Friday 4 September 2026.
The coldest night of September 2026 in Grand Junction, CO: a low of 50°F on Sunday 20 September 2026.
The wettest day of September 2026 in Grand Junction, CO: 0.36 in on Thursday 17 September 2026.