Alamosa, CO: September

30 September 2026: September 2026 averaged 59.6°F in Alamosa, CO, the warmest September since 2022, 2nd warmest of 95.

September 2026

Mean temperature: 59.6°F; Warmest since 2022; 2nd warmest of 95
Precipitation: 2.27 in; Wettest since 2013; 3rd wettest of 96

A normal September in Alamosa, CO (1991 to 2020): a mean temperature of 55.7°F, between 53.4°F and 58.1°F in eight years of ten and 0.94 in of precipitation, between 0.28 in and 1.61 in in eight years of ten.

The mean temperature of every September in Alamosa, CO since 1932: 59.6°F in 2026; the highest is 59.9°F, in 2022.

Normal range, 53.4 to 58.1°F

Every year, ranked, as a table

Every September in Alamosa, CO from 1907 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	59.6	2	75.9	27	43.4	1	2.27	3	0
2025	55.2	50	73.3	59	37.1	41	1.02	38	0
2024	56.7	25	76.8	13	36.6	47	0.77	52	0
2023	56.8	23	76.3	22	37.3	39	0.92	45	0
2022	59.9	1	78.7	4	41	6	0.53	64	0
2021	58.4	6	79.8	1	36.9	44	0.32	76	0
2020	54.7	60	75	36	34.3	84	1.53	12	0
2019	58.6	5	77.2	12	40	9	0.73	54	0
2018	57.6	16	77.4	10	37.8	32	1.02	38	0
2017	56.6	26	74.1	49	39.1	15	1.75	7	0
2016	56.5	30	76	25	36.9	44	0.28	77	0
2015	58.4	6	78.5	5	38.3	27	0.78	51	0
2014	58.7	4	77.8	6	39.6	11	0.41	71	0
2013	57.8	13	73.5	57	42.1	2	2.98	1	0
2012	55.2	50	74.9	38	35.6	62	1.10	32	0
2011	55.9	40	73.9	51	37.9	30	1.15	29	0
2010	58.1	10	79.6	2	36.6	47	0.73	54	0
2009	54.6	62	72.7	66	36.5	50	1.04	37	0
2008	54.9	57	75.2	34	34.5	81	0.21	83	0
2007	57	18	74.7	42	39.3	14	1.06	34	0
2006	51.2	95	69.8	90	32.6	91	0.60	60	0
2005	57	18	75.4	32	38.6	24	1.12	31	0
2004	54.1	70	73.2	62	34.9	74	0.74	53	0
2003	54.6	62	73.9	51	35.3	68	1.29	22	0
2002	55.3	49	72.2	73	38.4	26	1.38	19	0
2001	56.1	37	75.9	27	36.3	54	0.11	90	0
2000	56.5	30	76.7	15	36.2	55	0.23	79	0
1999	53.4	81	71.1	82	35.7	59	1.09	33	0
1998	57.9	11	76.6	16	39.1	15	0.86	48	0
1997	57.9	11	74.2	47	41.5	4	1.69	8	0
1996	52.6	90	70.5	86	34.6	78	0.57	62	0
1995	53.8	74	69.6	91	37.9	30	1.60	10	0
1994	54.2	69	72.9	65	35.4	65	1.01	40	0
1993	53.4	81	71.8	77	35	72	0.58	61	0
1992	55	55	74.4	45	35.6	62	0.50	67	0
1991	55.4	48	73.7	54	37.1	41	0.70	56	0
1990	58.3	9	75.5	31	41.1	5	1.48	15	0
1989	55.8	43	74.9	38	36.6	47	1.28	24	0
1988	53.5	78	72.7	66	34.3	84	0.64	58	0
1987	52.7	88	73.7	54	31.7	95	0.22	81	0
1986	52.6	90	69.1	94	36.1	56	1.20	28	0
1985	52.2	94	69.1	94	35.3	68	1.33	21	0
1984	56.3	33	73.6	56	39	19	0.36	75	0
1983	57.7	15	76.6	16	38.8	21	0.38	73	0
1982	55.6	45	70.4	88	40.8	7	1.85	6	0
1981	56.2	36	73.3	59	39.1	15	1.40	18	0
1980	56	39	76.1	24	35.9	57	0.46	69	0
1979	55.9	40	76.5	18	35.3	68	0.22	81	0
1978	55.5	47	75.2	34	35.8	58	0.19	84	0
1977	56.6	26	74.4	45	38.9	20	1.15	29	0
1976	54.3	67	71.3	81	37.2	40	0.67	57	0
1975	54.1	70	70.7	85	37.6	34	1.47	16	0
1974	53.5	78	72.6	70	34.4	83	0.62	59	0
1973	53.4	81	71.9	76	34.9	74	1.06	34	0
1972	55.9	40	73.2	62	38.7	22	1.00	42	0
1971	52.7	88	70.5	86	34.9	74	1.45	17	0
1970	52.4	93	70.4	88	34.5	81	1.53	12	0
1969	54.9	57	72	75	37.8	32	1.29	22	0
1968	52.5	92	71.6	80	33.3	88	0.41	71	0
1967	54.3	67	71	83	37.6	34	0.53	64	0
1966	55.2	50	75	36	35.4	65	0.03	93	0
1965	53.1	86	69.4	92	36.9	44	1.59	11	0
1964	55.1	53	72.2	73	38.1	29	1.06	34	0
1963	57.8	13	76.5	18	39.1	15	0.15	87	0
1962	54.9	57	73.3	59	36.4	52	0.81	50	0
1961	53	87	69.4	92	36.5	50	1.38	19	0
1960	56.4	32	75.4	32	37.4	37	0.26	78	0
1959	54	73	73.4	58	34.6	78	1.94	5	0
1958	56.6	26	74.5	44	38.7	22	0.48	68	0
1957	53.4	81	74	50	32.9	90	0.01	94	0
1956	56.9	21	79.2	3	34.6	78	trace	95	0
1955	55.6	45	76.2	23	35	72	0.15	87	0
1954	57	18	75.8	29	38.2	28	0.88	47	0
1953	55	55	77.5	9	32.5	92	trace	95	0
1952	55.7	44	73.9	51	37.4	37	1.28	24	0
1951	54.6	62	76	25	33.3	88	0.05	92	0
1950	54.1	70	71	83	37.1	41	0.55	63	0
1949	56.6	26	74.7	42	38.5	25	0.98	43	0
1948	56.8	23	77.8	6	35.7	59	0.13	89	0
1947	56.9	21	77.3	11	36.4	52	1.21	27	1
1946	56.1	37	76.5	18	35.7	59	0.23	79	0
1945	54.6	62	76.8	13	32.4	93	0.11	90	0
1944	55.1	53	76.5	18	33.6	87	0.44	70	0
1943	53.5	78	74.8	41	32.2	94	0.19	84	0
1942	54.7	60	74.2	47	35.3	68	1.51	14	0
1941	54.6	62	71.7	79	37.5	36	2.14	4	0
1940	56.3	33	73.1	64	39.5	12	0.91	46	0
1939	58.4	6	74.9	38	41.9	3	0.52	66	0
1938	56.3	33	72.7	66	40	9	2.62	2	0
1937	57.5	17	75.6	30	39.4	13	1.01	40	0
1936	53.8	74	72.3	72	35.4	65	1.62	9	0
1935	53.7	76	71.8	77	35.6	62	0.93	44	0
1934	53.4	81	72.4	71	34.3	84	0.82	49	0
1933	59	3	77.6	8	40.5	8	1.26	26	0
1932	53.7	76	72.7	66	34.7	77	0.16	86	0
1907							0.38	73	7

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2022	59.9
2026	59.6
1933	59
2014	58.7
2019	58.6
2021	58.4
2015	58.4
1939	58.4
1990	58.3
2010	58.1

Coldest
Year	Mean, °F
2006	51.2
1985	52.2
1970	52.4
1968	52.5
1996	52.6
1986	52.6
1987	52.7
1971	52.7
1961	53
1965	53.1

Wettest
Year	Precipitation, in
2013	2.98
1938	2.62
2026	2.27
1941	2.14
1959	1.94
1982	1.85
2017	1.75
1997	1.69
1936	1.62
1995	1.60

Driest
Year	Precipitation, in
1956	trace
1953	trace
1957	0.01
1966	0.03
1951	0.05
2001	0.11
1945	0.11
1948	0.13
1963	0.15
1955	0.15

The hottest, coldest and wettest days

Hottest day: 87°F; 11 September 2026, 9 September 2026, 7 September 2026, 6 September 2026
Coldest night: 29°F; 11 September 2026
Wettest day: 0.71 in; 30 September 2026

Every month, season and year

Months

Seasons

Years

Alamosa, CO the day's answers

All-time records

Every answer in words

September 2026 brought 2.27 in of precipitation in Alamosa, CO, the wettest September since 2013, 3rd wettest of 96.
The hottest day of September 2026 in Alamosa, CO: 87°F on Friday 11 September 2026, Wednesday 9 September 2026, Monday 7 September 2026 and 1 other day.
The coldest night of September 2026 in Alamosa, CO: a low of 29°F on Friday 11 September 2026.
The wettest day of September 2026 in Alamosa, CO: 0.71 in on Wednesday 30 September 2026.