Every September in Baker City, OR from 1928 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 | 55.2 | 75 | 73.2 | 70 | 37.1 | 63 | 1.17 | 14 | 0 |
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| 2025 | 61.6 | 7 | 80.7 | 10 | 42.5 | 11 | 0.51 | 39 | 0 |
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| 2024 | 62.9 | 3 | 82.4 | 3 | 43.4 | 5 | 0.40 | 49 | 0 |
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| 2023 | 57.1 | 48 | 74 | 64 | 40.2 | 29 | 0.17 | 71 | 0 |
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| 2022 | 59.8 | 17 | 79.8 | 17 | 39.7 | 36 | 0.65 | 32 | 0 |
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| 2021 | 55.3 | 72 | 76.5 | 43 | 34.2 | 95 | 0.47 | 43 | 0 |
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| 2020 | 60.6 | 11 | 81.5 | 6 | 39.7 | 36 | trace | 92 | 0 |
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| 2019 | 58.5 | 31 | 74.5 | 61 | 42.6 | 10 | 0.85 | 21 | 0 |
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| 2018 | 56.7 | 51 | 77.2 | 34 | 36.1 | 76 | trace | 92 | 0 |
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| 2017 | 58.9 | 26 | 77.5 | 31 | 40.3 | 26 | 0.16 | 74 | 0 |
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| 2016 | 54.5 | 79 | 73.3 | 69 | 35.7 | 81 | 0.07 | 83 | 0 |
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| 2015 | 55.5 | 67 | 75.5 | 52 | 35.5 | 85 | 0.68 | 29 | 0 |
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| 2014 | 58.2 | 36 | 77.4 | 32 | 39.1 | 41 | 0.38 | 55 | 0 |
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| 2013 | 57.8 | 39 | 73.5 | 65 | 42 | 16 | 1.61 | 7 | 0 |
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| 2012 | 57.3 | 45 | 78.4 | 26 | 36.1 | 76 | 0.06 | 84 | 0 |
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| 2011 | 59.7 | 18 | 82.2 | 4 | 36.9 | 67 | trace | 92 | 2 |
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| 2010 | 56.4 | 53 | 76 | 46 | 36.8 | 69 | 0.40 | 49 | 0 |
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| 2009 | 59 | 24 | 79.9 | 15 | 38.2 | 51 | 0.01 | 90 | 0 |
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| 2008 | 55.3 | 72 | 76 | 46 | 34.6 | 93 | 0.97 | 16 | 0 |
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| 2007 | 54.7 | 77 | 74.3 | 62 | 35.2 | 87 | 0.43 | 46 | 0 |
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| 2006 | 55.6 | 66 | 75.7 | 50 | 35.4 | 86 | 0.46 | 44 | 0 |
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| 2005 | 53.2 | 88 | 72.9 | 73 | 33.4 | 99 | 0.09 | 81 | 0 |
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| 2004 | 54.2 | 84 | 71.9 | 76 | 36.5 | 72 | 0.77 | 24 | 0 |
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| 2003 | 57.2 | 46 | 77 | 36 | 37.5 | 59 | 0.38 | 55 | 0 |
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| 2002 | 55.4 | 70 | 75.6 | 51 | 35.1 | 89 | 0.34 | 58 | 0 |
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| 2001 | 59 | 24 | 79.1 | 21 | 39 | 42 | 0.90 | 18 | 1 |
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| 2000 | 54 | 85 | 71.1 | 84 | 36.9 | 67 | 2.01 | 5 | 0 |
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| 1999 | 56.4 | 53 | 77.1 | 35 | 35.7 | 81 | 0.00 | 97 | 0 |
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| 1998 | 63 | 2 | 81.4 | 7 | 44.6 | 3 | 1.66 | 6 | 0 |
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| 1997 | 59.9 | 15 | 78.8 | 22 | 40.9 | 23 | 0.44 | 45 | 0 |
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| 1996 | 55.1 | 76 | 73.2 | 70 | 37.1 | 63 | 0.38 | 55 | 0 |
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| 1995 | 59.9 | 15 | 78.8 | 22 | 40.9 | 23 | 0.04 | 86 | 0 |
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| 1994 | 60.6 | 11 | 80 | 14 | 41.1 | 22 | 0.17 | 71 | 0 |
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| 1993 | 56.4 | 53 | 77 | 36 | 35.7 | 81 | 0.00 | 97 | 0 |
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| 1992 | 56.1 | 57 | 74.7 | 59 | 37.6 | 56 | 0.17 | 71 | 0 |
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| 1991 | 58.4 | 34 | 77.8 | 28 | 38.9 | 43 | 0.21 | 68 | 0 |
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| 1990 | 62.6 | 4 | 82.7 | 2 | 42.5 | 11 | 0.12 | 77 | 0 |
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| 1989 | 56.4 | 53 | 75 | 55 | 37.7 | 54 | 0.32 | 61 | 0 |
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| 1988 | 55.5 | 67 | 74.8 | 57 | 36.1 | 76 | 0.25 | 66 | 1 |
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| 1987 | 58.9 | 26 | 80.1 | 12 | 37.8 | 53 | 0.00 | 97 | 0 |
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| 1986 | 51.7 | 97 | 65.8 | 98 | 37.6 | 56 | 1.60 | 8 | 0 |
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| 1985 | 52.6 | 92 | 66.5 | 97 | 38.7 | 45 | 1.39 | 10 | 0 |
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| 1984 | 55.4 | 70 | 71.2 | 82 | 39.5 | 38 | 0.50 | 42 | 0 |
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| 1983 | 54.3 | 82 | 71.4 | 80 | 37.2 | 61 | 0.56 | 37 | 0 |
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| 1982 | 56.5 | 52 | 71.2 | 82 | 41.7 | 19 | 1.29 | 12 | 0 |
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| 1981 | 58.9 | 26 | 77.6 | 29 | 40.2 | 29 | 1.00 | 15 | 0 |
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| 1980 | 59.2 | 23 | 76.1 | 45 | 42.2 | 14 | 2.72 | 2 | 0 |
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| 1979 | 60.8 | 10 | 80.8 | 9 | 40.8 | 25 | 0.26 | 65 | 0 |
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| 1978 | 55.7 | 62 | 71 | 87 | 40.3 | 26 | 2.29 | 4 | 0 |
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| 1977 | 55.8 | 60 | 71.7 | 77 | 39.8 | 33 | 1.51 | 9 | 0 |
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| 1976 | 59.5 | 19 | 77 | 36 | 42 | 16 | 0.16 | 74 | 0 |
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| 1975 | 58.4 | 34 | 79.9 | 15 | 37 | 65 | 0.12 | 77 | 0 |
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| 1974 | 60.1 | 14 | 81.8 | 5 | 38.4 | 47 | trace | 92 | 0 |
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| 1973 | 57.5 | 43 | 75 | 55 | 40.1 | 32 | 1.33 | 11 | 0 |
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| 1972 | 53.9 | 86 | 71.1 | 84 | 36.7 | 70 | 0.89 | 19 | 0 |
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| 1971 | 51.2 | 99 | 67.5 | 95 | 34.9 | 91 | 0.39 | 54 | 0 |
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| 1970 | 52.5 | 93 | 68.8 | 92 | 36.3 | 74 | 1.29 | 12 | 0 |
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| 1969 | 58.8 | 29 | 78 | 27 | 39.5 | 38 | 0.21 | 68 | 0 |
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| 1968 | 55.7 | 62 | 73.4 | 68 | 38 | 52 | 0.20 | 70 | 0 |
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| 1967 | 62.6 | 4 | 83.3 | 1 | 41.8 | 18 | 0.40 | 49 | 0 |
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| 1966 | 61.3 | 9 | 79.7 | 18 | 42.9 | 8 | 0.87 | 20 | 0 |
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| 1965 | 52 | 95 | 70.1 | 90 | 33.8 | 96 | 0.10 | 80 | 0 |
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| 1964 | 55.7 | 62 | 74.1 | 63 | 37.3 | 60 | 0.51 | 39 | 0 |
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| 1963 | 62.1 | 6 | 80.3 | 11 | 43.8 | 4 | 0.58 | 36 | 0 |
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| 1962 | 57.4 | 44 | 77 | 36 | 37.7 | 54 | 0.97 | 16 | 0 |
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| 1961 | 51.5 | 98 | 68.4 | 93 | 34.6 | 93 | 0.41 | 48 | 0 |
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| 1960 | 57.9 | 38 | 77.4 | 32 | 38.4 | 47 | 0.71 | 28 | 0 |
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| 1959 | 52.9 | 90 | 66.8 | 96 | 38.9 | 43 | 2.32 | 3 | 0 |
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| 1958 | 54.4 | 81 | 72 | 75 | 36.7 | 70 | 0.40 | 49 | 0 |
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| 1957 | 57.8 | 39 | 78.5 | 25 | 37 | 65 | 0.40 | 49 | 0 |
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| 1956 | 55.9 | 58 | 75.8 | 48 | 36 | 79 | 0.08 | 82 | 0 |
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| 1955 | 54.5 | 79 | 73.2 | 70 | 35.9 | 80 | 0.82 | 22 | 0 |
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| 1954 | 53.2 | 88 | 71.7 | 77 | 34.7 | 92 | 0.23 | 67 | 0 |
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| 1953 | 58.5 | 31 | 79.5 | 19 | 37.6 | 56 | 0.01 | 90 | 0 |
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| 1952 | 58.5 | 31 | 78.6 | 24 | 38.3 | 50 | 0.60 | 34 | 0 |
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| 1951 | 56.8 | 50 | 77 | 36 | 36.5 | 72 | 0.03 | 87 | 0 |
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| 1950 | 55.5 | 67 | 74.8 | 57 | 36.2 | 75 | 0.05 | 85 | 0 |
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| 1949 | 57.6 | 41 | 76.8 | 41 | 38.4 | 47 | 0.51 | 39 | 0 |
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| 1948 | 54.6 | 78 | 73.5 | 65 | 35.7 | 81 | 0.28 | 63 | 1 |
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| 1947 | 55.3 | 72 | 75.8 | 48 | 35.1 | 89 | 0.66 | 31 | 1 |
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| 1946 | 52.9 | 90 | 72.3 | 74 | 33.6 | 98 | 0.42 | 47 | 0 |
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| 1945 | 52.3 | 94 | 70.8 | 88 | 33.7 | 97 | 0.80 | 23 | 0 |
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| 1944 | 55.8 | 60 | 76.3 | 44 | 35.2 | 87 | 0.12 | 77 | 0 |
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| 1943 | 59.3 | 21 | 81.3 | 8 | 37.2 | 61 | 0.02 | 88 | 0 |
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| 1942 | 59.4 | 20 | 76.6 | 42 | 42.1 | 15 | 0.34 | 58 | 0 |
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| 1941 | 52 | 95 | 64.3 | 99 | 39.8 | 33 | 0.67 | 30 | 0 |
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| 1940 | 59.3 | 21 | 71.5 | 79 | 47.2 | 1 | 3.90 | 1 | 0 |
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| 1939 | 58.8 | 29 | 75.4 | 53 | 42.3 | 13 | 0.56 | 37 | 0 |
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| 1938 | 63.4 | 1 | 80.1 | 12 | 46.7 | 2 | 0.73 | 26 | 0 |
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| 1937 | 60.2 | 13 | 77.6 | 29 | 42.8 | 9 | 0.16 | 74 | 0 |
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| 1936 | 56.9 | 49 | 73.5 | 65 | 40.3 | 26 | 0.33 | 60 | 0 |
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| 1935 | 61.4 | 8 | 79.5 | 19 | 43.2 | 6 | trace | 92 | 0 |
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| 1934 | 55.7 | 62 | 71.1 | 84 | 40.2 | 29 | 0.29 | 62 | 0 |
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| 1933 | 54.3 | 82 | 69.1 | 91 | 39.4 | 40 | 0.75 | 25 | 0 |
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| 1932 | 57.6 | 41 | 75.4 | 53 | 39.8 | 33 | 0.02 | 88 | 0 |
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| 1931 | 55.9 | 58 | 70.3 | 89 | 41.4 | 20 | 0.63 | 33 | 0 |
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| 1930 | 57.2 | 46 | 71.3 | 81 | 43.1 | 7 | 0.73 | 26 | 0 |
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| 1929 | 53.3 | 87 | 68.1 | 94 | 38.5 | 46 | 0.28 | 63 | 0 |
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| 1928 | 58 | 37 | 74.6 | 60 | 41.4 | 20 | 0.60 | 34 | 0 |
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