Every 1 to 10 October in Billings, MT from 1934 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 | 61.7 | 5 | 76.3 | 5 | 47 | 10 | trace | 80 | 0 |
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| 2025 | 55.9 | 29 | 66.3 | 42 | 45.4 | 14 | 1.04 | 14 | 0 |
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| 2024 | 60.2 | 9 | 75.5 | 7 | 44.8 | 17 | 0.00 | 85 | 0 |
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| 2023 | 55.8 | 32 | 66.1 | 44 | 45.5 | 13 | 0.52 | 33 | 0 |
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| 2022 | 55.6 | 34 | 65.9 | 45 | 45.3 | 16 | 0.39 | 43 | 0 |
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| 2021 | 60.8 | 8 | 73.8 | 10 | 47.7 | 4 | 0.23 | 53 | 0 |
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| 2020 | 62.8 | 4 | 77.9 | 3 | 47.7 | 4 | 0.00 | 85 | 0 |
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| 2019 | 42.6 | 91 | 53.3 | 88 | 31.8 | 91 | 0.43 | 38 | 0 |
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| 2018 | 42.9 | 90 | 50.8 | 92 | 35 | 86 | 0.23 | 53 | 0 |
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| 2017 | 46.8 | 80 | 57.8 | 79 | 35.8 | 81 | 0.28 | 48 | 0 |
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| 2016 | 50.1 | 66 | 59.6 | 72 | 40.6 | 54 | 2.73 | 1 | 0 |
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| 2015 | 57.7 | 19 | 67.6 | 33 | 47.7 | 4 | 0.86 | 18 | 0 |
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| 2014 | 55.1 | 37 | 67.8 | 32 | 42.3 | 37 | 0.04 | 70 | 0 |
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| 2013 | 47.1 | 78 | 56.2 | 83 | 37.9 | 70 | 1.65 | 6 | 0 |
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| 2012 | 47.4 | 77 | 58.2 | 76 | 36.6 | 78 | 0.73 | 23 | 0 |
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| 2011 | 60.1 | 10 | 71.6 | 20 | 48.6 | 2 | 1.19 | 11 | 0 |
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| 2010 | 61.6 | 6 | 74.6 | 9 | 48.5 | 3 | 0.24 | 51 | 0 |
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| 2009 | 37.9 | 93 | 45.3 | 93 | 30.5 | 92 | 1.24 | 10 | 0 |
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| 2008 | 54 | 42 | 64.5 | 52 | 43.4 | 27 | 0.88 | 17 | 0 |
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| 2007 | 50.7 | 64 | 60.5 | 68 | 40.8 | 52 | 1.56 | 7 | 0 |
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| 2006 | 50.8 | 63 | 59.6 | 72 | 42 | 39 | 0.92 | 16 | 0 |
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| 2005 | 45.7 | 83 | 54.5 | 86 | 36.9 | 74 | 1.91 | 3 | 0 |
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| 2004 | 57.5 | 22 | 71.2 | 22 | 43.7 | 26 | trace | 80 | 0 |
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| 2003 | 59 | 13 | 73.1 | 12 | 44.8 | 17 | 0.71 | 24 | 0 |
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| 2002 | 49.2 | 71 | 59.2 | 74 | 39.1 | 61 | 0.57 | 31 | 0 |
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| 2001 | 51.4 | 58 | 61.6 | 64 | 41.2 | 47 | 0.16 | 57 | 0 |
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| 2000 | 44.6 | 87 | 56.4 | 80 | 32.8 | 90 | 0.07 | 67 | 0 |
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| 1999 | 49.2 | 71 | 61.4 | 65 | 36.9 | 74 | 0.11 | 61 | 0 |
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| 1998 | 53.7 | 44 | 64.7 | 50 | 42.7 | 33 | 0.42 | 39 | 0 |
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| 1997 | 56.5 | 25 | 69.1 | 27 | 43.8 | 24 | 0.84 | 19 | 0 |
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| 1996 | 56.3 | 26 | 70.8 | 23 | 41.8 | 40 | trace | 80 | 0 |
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| 1995 | 49.4 | 70 | 60 | 69 | 38.7 | 63 | 0.22 | 55 | 0 |
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| 1994 | 51.2 | 61 | 61.8 | 62 | 40.6 | 54 | 0.24 | 51 | 0 |
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| 1993 | 47.5 | 76 | 60 | 69 | 34.9 | 87 | 1.67 | 5 | 0 |
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| 1992 | 54.3 | 39 | 67.1 | 35 | 41.5 | 42 | 0.15 | 59 | 0 |
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| 1991 | 54.3 | 39 | 67.2 | 34 | 41.4 | 43 | 0.25 | 50 | 0 |
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| 1990 | 50.3 | 65 | 63.6 | 58 | 36.9 | 74 | 0.68 | 28 | 0 |
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| 1989 | 48.7 | 74 | 58 | 77 | 39.4 | 60 | 1.31 | 8 | 0 |
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| 1988 | 55.2 | 36 | 69.2 | 26 | 41.2 | 47 | 0.00 | 85 | 0 |
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| 1987 | 53.5 | 45 | 68.5 | 28 | 38.4 | 65 | 0.01 | 76 | 0 |
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| 1986 | 50.9 | 62 | 60.6 | 67 | 41.2 | 47 | 0.33 | 45 | 0 |
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| 1985 | 41.6 | 92 | 53.1 | 89 | 30.1 | 93 | 0.67 | 29 | 0 |
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| 1984 | 57.6 | 20 | 72.4 | 18 | 42.8 | 32 | 0.00 | 85 | 0 |
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| 1983 | 52.5 | 49 | 62.1 | 61 | 42.9 | 31 | 0.07 | 67 | 0 |
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| 1982 | 49.6 | 69 | 59.7 | 71 | 39.5 | 58 | 0.44 | 36 | 0 |
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| 1981 | 52.8 | 47 | 64.9 | 48 | 40.7 | 53 | 0.37 | 44 | 0 |
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| 1980 | 63.2 | 3 | 79.1 | 2 | 47.2 | 7 | 0.00 | 85 | 0 |
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| 1979 | 58.2 | 16 | 73.2 | 11 | 43.1 | 29 | 0.10 | 62 | 0 |
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| 1978 | 52.6 | 48 | 66.2 | 43 | 38.9 | 62 | 0.00 | 85 | 0 |
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| 1977 | 44.1 | 89 | 51.9 | 91 | 36.2 | 80 | 1.03 | 15 | 0 |
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| 1976 | 54 | 42 | 66.5 | 40 | 41.4 | 43 | 0.56 | 32 | 0 |
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| 1975 | 58.2 | 16 | 72.3 | 19 | 44 | 22 | 0.31 | 46 | 0 |
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| 1974 | 52.1 | 54 | 65.4 | 47 | 38.7 | 63 | 0.08 | 65 | 0 |
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| 1973 | 48.1 | 75 | 58.9 | 75 | 37.2 | 72 | 0.71 | 24 | 0 |
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| 1972 | 51.9 | 55 | 64.2 | 57 | 39.5 | 58 | 0.41 | 41 | 0 |
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| 1971 | 52.9 | 46 | 64.3 | 56 | 41.4 | 43 | 1.88 | 4 | 0 |
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| 1970 | 49 | 73 | 60.7 | 66 | 37.2 | 72 | 0.41 | 41 | 0 |
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| 1969 | 47.1 | 78 | 56.2 | 83 | 38 | 69 | 0.50 | 34 | 0 |
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| 1968 | 51.7 | 57 | 63.2 | 59 | 40.2 | 57 | 0.26 | 49 | 0 |
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| 1967 | 52.2 | 52 | 63 | 60 | 41.4 | 43 | 0.74 | 22 | 0 |
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| 1966 | 55.3 | 35 | 67.9 | 31 | 42.6 | 35 | 0.42 | 39 | 0 |
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| 1965 | 58.6 | 15 | 73.1 | 12 | 44.1 | 21 | 0.00 | 85 | 0 |
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| 1964 | 52.2 | 52 | 65.9 | 45 | 38.4 | 65 | 0.02 | 72 | 0 |
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| 1963 | 63.6 | 2 | 76.7 | 4 | 50.4 | 1 | 0.01 | 76 | 0 |
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| 1962 | 55.7 | 33 | 68.4 | 29 | 43 | 30 | 0.10 | 62 | 0 |
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| 1961 | 51.4 | 58 | 61.8 | 62 | 40.9 | 51 | 0.44 | 36 | 0 |
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| 1960 | 57 | 24 | 69.9 | 25 | 44 | 22 | 0.75 | 21 | 0 |
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| 1959 | 45.7 | 83 | 56.4 | 80 | 34.9 | 87 | 0.31 | 46 | 0 |
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| 1958 | 54.4 | 38 | 66.9 | 37 | 41.8 | 40 | 0.14 | 60 | 0 |
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| 1957 | 45.6 | 85 | 56 | 85 | 35.1 | 84 | 0.84 | 19 | 0 |
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| 1956 | 57.5 | 22 | 72.6 | 16 | 42.4 | 36 | 0.02 | 72 | 0 |
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| 1955 | 59.1 | 12 | 72.8 | 15 | 45.4 | 14 | 0.10 | 62 | 0 |
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| 1954 | 49.9 | 67 | 64.4 | 55 | 35.3 | 82 | 0.03 | 71 | 0 |
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| 1953 | 59 | 13 | 75.3 | 8 | 42.7 | 33 | 0.02 | 72 | 0 |
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| 1952 | 51.9 | 55 | 66.4 | 41 | 37.3 | 71 | 0.00 | 85 | 0 |
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| 1951 | 55.9 | 29 | 66.9 | 37 | 44.8 | 17 | 0.22 | 55 | 0 |
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| 1950 | 46.7 | 81 | 58 | 77 | 35.3 | 82 | 0.16 | 57 | 0 |
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| 1949 | 46.6 | 82 | 56.3 | 82 | 36.8 | 77 | 0.67 | 29 | 0 |
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| 1948 | 52.4 | 51 | 66.7 | 39 | 38.1 | 68 | 0.02 | 72 | 0 |
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| 1947 | 55.9 | 29 | 67 | 36 | 44.7 | 20 | 0.08 | 65 | 0 |
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| 1946 | 44.7 | 86 | 53 | 90 | 36.3 | 79 | 1.27 | 9 | 0 |
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| 1945 | 57.9 | 18 | 72.6 | 16 | 43.2 | 28 | trace | 80 | 0 |
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| 1944 | 51.4 | 58 | 64.5 | 52 | 38.3 | 67 | trace | 80 | 0 |
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| 1943 | 64.7 | 1 | 82.5 | 1 | 46.8 | 11 | 0.00 | 85 | 0 |
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| 1942 | 61.4 | 7 | 75.7 | 6 | 47.1 | 9 | 0.01 | 76 | 0 |
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| 1941 | 44.3 | 88 | 54.2 | 87 | 34.4 | 89 | 1.16 | 12 | 0 |
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| 1940 | 54.3 | 39 | 64.8 | 49 | 43.8 | 24 | 1.13 | 13 | 0 |
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| 1939 | 49.9 | 67 | 64.6 | 51 | 35.1 | 84 | 0.70 | 26 | 0 |
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| 1938 | 57.6 | 20 | 68 | 30 | 47.2 | 7 | 0.46 | 35 | 0 |
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| 1937 | 52.5 | 49 | 64.5 | 52 | 40.5 | 56 | 2.38 | 2 | 0 |
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| 1936 | 56.1 | 28 | 70.1 | 24 | 42.1 | 38 | 0.01 | 76 | 0 |
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| 1935 | 56.3 | 26 | 71.3 | 21 | 41.2 | 47 | 0.06 | 69 | 0 |
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| 1934 | 59.4 | 11 | 73 | 14 | 45.8 | 12 | 0.70 | 26 | 0 |
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