Every 1 September to 9 October 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 |
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| 2026 | 58.3 | 1 | 75.1 | 16 | 41.5 | 1 | 2.27 | 5 | 0 |
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| 2025 | 54.4 | 38 | 73.4 | 40 | 35.3 | 42 | 1.02 | 50 | 0 |
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| 2024 | 56.3 | 11 | 77.1 | 3 | 35.5 | 38 | 0.77 | 59 | 0 |
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| 2023 | 55.3 | 21 | 74.6 | 23 | 36.1 | 30 | 1.31 | 28 | 0 |
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| 2022 | 57.6 | 2 | 75.3 | 14 | 39.8 | 2 | 0.95 | 53 | 0 |
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| 2021 | 56.3 | 11 | 77.1 | 3 | 35.6 | 35 | 0.53 | 71 | 0 |
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| 2020 | 53.7 | 49 | 75 | 17 | 32.3 | 89 | 1.53 | 21 | 0 |
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| 2019 | 56.4 | 8 | 75.8 | 10 | 37.1 | 23 | 0.73 | 62 | 0 |
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| 2018 | 56.2 | 14 | 74.9 | 18 | 37.5 | 17 | 1.18 | 36 | 0 |
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| 2017 | 55 | 27 | 72.3 | 57 | 37.7 | 14 | 1.80 | 10 | 0 |
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| 2016 | 54 | 43 | 73.6 | 34 | 34.4 | 52 | 0.30 | 80 | 0 |
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| 2015 | 57.6 | 2 | 76.7 | 6 | 38.4 | 10 | 1.05 | 46 | 0 |
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| 2014 | 56.3 | 11 | 75.4 | 13 | 37.1 | 23 | 0.78 | 58 | 0 |
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| 2013 | 55.3 | 21 | 72.1 | 59 | 38.4 | 10 | 2.98 | 4 | 0 |
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| 2012 | 53.3 | 59 | 73.5 | 38 | 33.1 | 82 | 1.10 | 40 | 0 |
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| 2011 | 53.8 | 47 | 71.1 | 68 | 36.5 | 27 | 1.56 | 20 | 0 |
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| 2010 | 56.7 | 5 | 77.8 | 1 | 35.7 | 34 | 0.80 | 57 | 0 |
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| 2009 | 51.7 | 84 | 70 | 83 | 33.4 | 69 | 1.13 | 38 | 0 |
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| 2008 | 53.4 | 56 | 73.6 | 34 | 33.3 | 72 | 0.70 | 66 | 0 |
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| 2007 | 55 | 27 | 73.2 | 43 | 36.8 | 25 | 1.12 | 39 | 0 |
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| 2006 | 51.4 | 87 | 69.5 | 85 | 33.3 | 72 | 1.78 | 11 | 0 |
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| 2005 | 55.7 | 18 | 74.1 | 27 | 37.4 | 18 | 1.90 | 6 | 0 |
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| 2004 | 52 | 82 | 70.7 | 73 | 33.2 | 75 | 1.04 | 49 | 0 |
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| 2003 | 53.6 | 51 | 71.9 | 60 | 35.3 | 42 | 1.67 | 13 | 0 |
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| 2002 | 53.1 | 61 | 70.5 | 78 | 35.6 | 35 | 1.59 | 18 | 0 |
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| 2001 | 54.7 | 34 | 74.4 | 25 | 34.9 | 48 | 0.14 | 88 | 0 |
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| 2000 | 54.9 | 29 | 74.7 | 22 | 35.1 | 45 | 0.39 | 77 | 0 |
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| 1999 | 52.3 | 75 | 70.7 | 73 | 33.9 | 59 | 1.23 | 32 | 0 |
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| 1998 | 54.8 | 33 | 73.6 | 34 | 35.9 | 32 | 0.98 | 52 | 0 |
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| 1997 | 56.4 | 8 | 73.3 | 42 | 39.4 | 3 | 1.88 | 8 | 0 |
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| 1996 | 52 | 82 | 70.7 | 73 | 33.3 | 72 | 0.57 | 70 | 0 |
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| 1995 | 51.1 | 90 | 68.1 | 94 | 34.1 | 57 | 1.60 | 17 | 0 |
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| 1994 | 52.6 | 70 | 70.7 | 73 | 34.4 | 52 | 1.27 | 31 | 0 |
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| 1993 | 52.7 | 68 | 71.4 | 65 | 33.9 | 59 | 0.67 | 68 | 0 |
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| 1992 | 53 | 64 | 72.8 | 51 | 33.2 | 75 | 0.50 | 73 | 0 |
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| 1991 | 53.9 | 44 | 73.6 | 34 | 34.2 | 56 | 0.70 | 66 | 0 |
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| 1990 | 56 | 15 | 73 | 48 | 38.9 | 6 | 1.63 | 15 | 0 |
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| 1989 | 54.1 | 41 | 72.8 | 51 | 35.4 | 41 | 1.28 | 30 | 0 |
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| 1988 | 52.3 | 75 | 71.3 | 66 | 33.2 | 75 | 0.75 | 60 | 0 |
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| 1987 | 52.2 | 78 | 74 | 30 | 30.4 | 94 | 0.22 | 81 | 0 |
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| 1986 | 50.9 | 92 | 67.9 | 95 | 33.9 | 59 | 1.20 | 35 | 0 |
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| 1985 | 50.9 | 92 | 68.2 | 93 | 33.7 | 63 | 1.35 | 27 | 0 |
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| 1984 | 54.3 | 39 | 70.6 | 77 | 38 | 12 | 1.09 | 41 | 0 |
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| 1983 | 55.3 | 21 | 74.1 | 27 | 36.5 | 27 | 0.38 | 78 | 0 |
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| 1982 | 53 | 64 | 68.7 | 90 | 37.2 | 21 | 1.85 | 9 | 0 |
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| 1981 | 54.6 | 37 | 71.6 | 62 | 37.7 | 14 | 1.66 | 14 | 0 |
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| 1980 | 54.7 | 34 | 75.7 | 11 | 33.6 | 66 | 0.46 | 75 | 0 |
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| 1979 | 55.1 | 26 | 76.4 | 7 | 33.8 | 62 | 0.22 | 81 | 0 |
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| 1978 | 53.7 | 49 | 74.4 | 25 | 33 | 83 | 0.19 | 83 | 0 |
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| 1977 | 55.3 | 21 | 73.2 | 43 | 37.3 | 19 | 1.23 | 32 | 0 |
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| 1976 | 52.2 | 78 | 69.3 | 86 | 35.2 | 44 | 0.71 | 65 | 0 |
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| 1975 | 52.7 | 68 | 70.4 | 80 | 34.9 | 48 | 1.47 | 24 | 0 |
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| 1974 | 52.6 | 70 | 71.9 | 60 | 33.2 | 75 | 0.73 | 62 | 0 |
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| 1973 | 52.2 | 78 | 70.8 | 71 | 33.7 | 63 | 1.07 | 44 | 0 |
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| 1972 | 55.4 | 20 | 72.2 | 58 | 38.6 | 8 | 1.08 | 43 | 0 |
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| 1971 | 50.8 | 94 | 68.7 | 90 | 32.8 | 85 | 1.51 | 22 | 0 |
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| 1970 | 50.6 | 95 | 68.6 | 92 | 32.7 | 86 | 1.90 | 6 | 0 |
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| 1969 | 52.6 | 70 | 70.2 | 82 | 35 | 46 | 1.36 | 26 | 0 |
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| 1968 | 51.5 | 86 | 70.5 | 78 | 32.6 | 87 | 0.50 | 73 | 0 |
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| 1967 | 53.5 | 54 | 70.8 | 71 | 36.2 | 29 | 0.53 | 71 | 0 |
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| 1966 | 53.8 | 47 | 73.2 | 43 | 34.3 | 55 | 0.03 | 92 | 0 |
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| 1965 | 52.2 | 78 | 70.3 | 81 | 34.1 | 57 | 1.59 | 18 | 0 |
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| 1964 | 53.9 | 44 | 72.4 | 56 | 35.5 | 38 | 1.06 | 45 | 0 |
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| 1963 | 56.7 | 5 | 76.1 | 8 | 37.2 | 21 | 0.15 | 87 | 0 |
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| 1962 | 53.5 | 54 | 72.5 | 55 | 34.5 | 50 | 0.82 | 55 | 0 |
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| 1961 | 51.2 | 89 | 68.8 | 88 | 33.6 | 66 | 1.62 | 16 | 0 |
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| 1960 | 54.9 | 29 | 73.8 | 32 | 36 | 31 | 0.31 | 79 | 0 |
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| 1959 | 51 | 91 | 68.8 | 88 | 33.2 | 75 | 3.11 | 3 | 0 |
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| 1958 | 54.9 | 29 | 73.2 | 43 | 36.7 | 26 | 0.59 | 69 | 0 |
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| 1957 | 53.1 | 61 | 72.8 | 51 | 33.4 | 69 | 0.01 | 93 | 0 |
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| 1956 | 55.7 | 18 | 77.6 | 2 | 33.7 | 63 | trace | 94 | 0 |
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| 1955 | 53.6 | 51 | 74.5 | 24 | 32.6 | 87 | 0.17 | 85 | 0 |
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| 1954 | 56.7 | 5 | 74.9 | 18 | 38.5 | 9 | 1.05 | 46 | 0 |
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| 1953 | 53.4 | 56 | 76 | 9 | 30.8 | 92 | trace | 94 | 0 |
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| 1952 | 53.9 | 44 | 72.9 | 49 | 35 | 46 | 1.30 | 29 | 0 |
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| 1951 | 52.5 | 73 | 73.5 | 38 | 31.6 | 91 | 0.05 | 91 | 0 |
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| 1950 | 53.3 | 59 | 71.2 | 67 | 35.5 | 38 | 0.72 | 64 | 0 |
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| 1949 | 55.3 | 21 | 73.4 | 40 | 37.3 | 19 | 1.15 | 37 | 0 |
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| 1948 | 54.1 | 41 | 74.9 | 18 | 33.2 | 75 | 0.14 | 88 | 0 |
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| 1947 | 56.4 | 8 | 76.9 | 5 | 35.9 | 32 | 1.21 | 34 | 1 |
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| 1946 | 54.3 | 39 | 74.1 | 27 | 34.5 | 50 | 1.05 | 46 | 0 |
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| 1945 | 53 | 64 | 75.2 | 15 | 30.8 | 92 | 0.11 | 90 | 0 |
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| 1944 | 53.4 | 56 | 74.8 | 21 | 31.9 | 90 | 0.44 | 76 | 0 |
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| 1943 | 51.6 | 85 | 73.2 | 43 | 30.1 | 95 | 0.19 | 83 | 0 |
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| 1942 | 53.6 | 51 | 73.8 | 32 | 33.4 | 69 | 1.51 | 22 | 0 |
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| 1941 | 52.4 | 74 | 69.3 | 86 | 35.6 | 35 | 3.15 | 2 | 0 |
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| 1940 | 54.7 | 34 | 71.6 | 62 | 37.8 | 13 | 1.09 | 41 | 0 |
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| 1939 | 56 | 15 | 72.6 | 54 | 39.3 | 4 | 0.74 | 61 | 0 |
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| 1938 | 54.9 | 29 | 71 | 70 | 38.8 | 7 | 3.92 | 1 | 0 |
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| 1937 | 55.8 | 17 | 73.9 | 31 | 37.6 | 16 | 1.01 | 51 | 0 |
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| 1936 | 51.4 | 87 | 69.9 | 84 | 32.9 | 84 | 1.70 | 12 | 0 |
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| 1935 | 53 | 64 | 71.6 | 62 | 34.4 | 52 | 0.93 | 54 | 0 |
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| 1934 | 53.1 | 61 | 72.9 | 49 | 33.2 | 75 | 0.82 | 55 | 0 |
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| 1933 | 57.5 | 4 | 75.7 | 11 | 39.2 | 5 | 1.47 | 24 | 0 |
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| 1932 | 52.3 | 75 | 71.1 | 68 | 33.6 | 66 | 0.16 | 86 | 0 |
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| 1907 | | | | | | | | | 16 |
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