Every 1 September 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 | 62.8 | 14 | 75.8 | 18 | 49.9 | 11 | 4.63 | 3 | 0 |
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| 2025 | 63.3 | 10 | 75.7 | 19 | 50.8 | 5 | 1.98 | 30 | 0 |
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| 2024 | 65.2 | 1 | 79.5 | 1 | 50.9 | 4 | 1.72 | 38 | 0 |
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| 2023 | 62.6 | 15 | 74.6 | 27 | 50.6 | 8 | 1.09 | 64 | 0 |
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| 2022 | 64.2 | 4 | 77.2 | 8 | 51.3 | 2 | 1.56 | 50 | 0 |
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| 2021 | 64.1 | 6 | 78.1 | 4 | 50.1 | 10 | 0.27 | 91 | 0 |
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| 2020 | 62.9 | 12 | 77.6 | 5 | 48.2 | 19 | 0.54 | 87 | 0 |
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| 2019 | 56.9 | 68 | 67.6 | 75 | 46.2 | 43 | 3.67 | 9 | 0 |
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| 2018 | 54.4 | 86 | 65.4 | 88 | 43.4 | 77 | 1.01 | 70 | 0 |
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| 2017 | 56.8 | 69 | 68.2 | 71 | 45.4 | 57 | 3.02 | 15 | 0 |
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| 2016 | 58.4 | 51 | 68.7 | 67 | 48.1 | 22 | 4.31 | 5 | 0 |
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| 2015 | 63.5 | 7 | 76.8 | 10 | 50.2 | 9 | 1.13 | 62 | 0 |
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| 2014 | 59.2 | 42 | 71.8 | 44 | 46.6 | 37 | 0.61 | 83 | 0 |
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| 2013 | 60.1 | 33 | 71.2 | 49 | 49 | 15 | 5.28 | 2 | 0 |
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| 2012 | 60.5 | 30 | 74.1 | 30 | 47 | 29 | 0.73 | 80 | 0 |
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| 2011 | 63.4 | 8 | 77.1 | 9 | 49.7 | 13 | 1.31 | 56 | 0 |
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| 2010 | 60.2 | 32 | 72.7 | 40 | 47.7 | 25 | 0.87 | 74 | 0 |
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| 2009 | 59.5 | 37 | 72.9 | 37 | 46.2 | 43 | 1.89 | 33 | 0 |
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| 2008 | 57.4 | 61 | 69.2 | 63 | 45.5 | 55 | 3.32 | 13 | 0 |
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| 2007 | 58.6 | 49 | 71.2 | 49 | 46.1 | 46 | 3.29 | 14 | 0 |
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| 2006 | 57.4 | 61 | 68.9 | 66 | 45.9 | 50 | 3.65 | 10 | 0 |
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| 2005 | 57.8 | 55 | 69.7 | 62 | 45.8 | 52 | 2.74 | 20 | 0 |
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| 2004 | 59.2 | 42 | 71.6 | 46 | 46.9 | 32 | 1.19 | 61 | 0 |
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| 2003 | 60 | 34 | 72.8 | 39 | 47.2 | 27 | 0.86 | 75 | 0 |
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| 2002 | 58.3 | 53 | 69.9 | 60 | 46.8 | 34 | 1.80 | 35 | 0 |
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| 2001 | 60.6 | 27 | 72.9 | 37 | 48.3 | 17 | 1.22 | 60 | 0 |
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| 2000 | 56 | 71 | 68.4 | 69 | 43.6 | 75 | 1.92 | 31 | 0 |
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| 1999 | 54.5 | 85 | 66.8 | 81 | 42.2 | 84 | 1.60 | 47 | 0 |
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| 1998 | 63.4 | 8 | 76.1 | 15 | 50.7 | 7 | 1.92 | 31 | 0 |
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| 1997 | 62.2 | 18 | 75.9 | 16 | 48.5 | 16 | 1.12 | 63 | 0 |
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| 1996 | 57.5 | 60 | 70.5 | 55 | 44.5 | 65 | 1.80 | 35 | 0 |
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| 1995 | 56.2 | 70 | 68.1 | 72 | 44.3 | 67 | 1.23 | 58 | 0 |
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| 1994 | 61.2 | 23 | 74.1 | 30 | 48.2 | 19 | 1.57 | 48 | 0 |
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| 1993 | 54.6 | 84 | 67.2 | 77 | 42 | 86 | 3.43 | 11 | 0 |
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| 1992 | 59.1 | 44 | 73 | 36 | 45.2 | 59 | 0.77 | 77 | 0 |
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| 1991 | 59 | 47 | 71.8 | 44 | 46.3 | 40 | 3.36 | 12 | 0 |
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| 1990 | 62.4 | 16 | 76.7 | 12 | 48.2 | 19 | 0.76 | 79 | 0 |
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| 1989 | 57.6 | 58 | 70.8 | 52 | 44.4 | 66 | 2.01 | 28 | 0 |
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| 1988 | 57.8 | 55 | 70.8 | 52 | 44.9 | 60 | 2.12 | 26 | 0 |
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| 1987 | 59.3 | 41 | 73.7 | 33 | 44.8 | 61 | 0.69 | 81 | 0 |
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| 1986 | 53 | 89 | 62.1 | 90 | 43.9 | 72 | 1.57 | 48 | 0 |
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| 1985 | 50.2 | 92 | 60.5 | 92 | 39.8 | 91 | 2.56 | 21 | 0 |
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| 1984 | 54.9 | 80 | 67.1 | 78 | 42.7 | 80 | 1.32 | 55 | 0 |
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| 1983 | 57.6 | 58 | 69.1 | 64 | 46.1 | 46 | 2.33 | 22 | 0 |
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| 1982 | 57.7 | 57 | 69 | 65 | 46.3 | 40 | 1.66 | 44 | 0 |
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| 1981 | 60.6 | 27 | 74.8 | 26 | 46.5 | 38 | 0.51 | 88 | 0 |
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| 1980 | 62.3 | 17 | 76.5 | 14 | 48 | 23 | 0.77 | 77 | 0 |
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| 1979 | 64.2 | 4 | 79.2 | 2 | 49.1 | 14 | 0.26 | 92 | 0 |
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| 1978 | 58.6 | 49 | 71.6 | 46 | 45.5 | 55 | 3.78 | 7 | 0 |
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| 1977 | 55.2 | 78 | 66.5 | 83 | 44 | 71 | 1.68 | 43 | 0 |
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| 1976 | 60 | 34 | 74 | 32 | 46 | 48 | 1.77 | 37 | 0 |
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| 1975 | 59.1 | 44 | 73.6 | 34 | 44.7 | 62 | 0.55 | 85 | 0 |
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| 1974 | 55 | 79 | 68.6 | 68 | 41.4 | 88 | 1.88 | 34 | 0 |
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| 1973 | 55.3 | 75 | 65.8 | 87 | 44.7 | 62 | 2.92 | 18 | 0 |
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| 1972 | 54.1 | 87 | 67 | 80 | 41.1 | 89 | 1.72 | 38 | 0 |
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| 1971 | 54.9 | 80 | 67.1 | 78 | 42.7 | 80 | 3.68 | 8 | 0 |
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| 1970 | 54.1 | 87 | 66.1 | 86 | 42.1 | 85 | 2.33 | 22 | 0 |
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| 1969 | 58.8 | 48 | 71.9 | 43 | 45.7 | 54 | 0.86 | 75 | 0 |
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| 1968 | 59.1 | 44 | 70.4 | 57 | 47.9 | 24 | 1.64 | 45 | 0 |
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| 1967 | 59.4 | 40 | 71.5 | 48 | 47.3 | 26 | 1.40 | 52 | 0 |
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| 1966 | 62.9 | 12 | 75.9 | 16 | 49.9 | 11 | 2.88 | 19 | 0 |
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| 1965 | 49.9 | 93 | 60.2 | 93 | 39.7 | 92 | 2.17 | 25 | 0 |
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| 1964 | 55.3 | 75 | 68.1 | 72 | 42.6 | 83 | 0.08 | 93 | 0 |
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| 1963 | 64.8 | 2 | 77.3 | 6 | 52.4 | 1 | 1.30 | 57 | 0 |
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| 1962 | 58.2 | 54 | 71 | 51 | 45.4 | 57 | 1.05 | 68 | 0 |
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| 1961 | 52.2 | 90 | 62.5 | 89 | 42 | 86 | 4.43 | 4 | 0 |
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| 1960 | 60.9 | 25 | 74.5 | 28 | 47.2 | 27 | 0.91 | 72 | 0 |
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| 1959 | 55.7 | 73 | 67.5 | 76 | 43.8 | 73 | 1.69 | 41 | 0 |
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| 1958 | 59.7 | 36 | 73.2 | 35 | 46.2 | 43 | 0.64 | 82 | 0 |
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| 1957 | 55.8 | 72 | 67.8 | 74 | 43.8 | 73 | 2.08 | 27 | 0 |
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| 1956 | 60.4 | 31 | 74.9 | 24 | 45.8 | 52 | 0.57 | 84 | 0 |
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| 1955 | 59.5 | 37 | 72.7 | 40 | 46.3 | 40 | 0.92 | 71 | 0 |
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| 1954 | 57.4 | 61 | 70.6 | 54 | 44.1 | 70 | 1.09 | 64 | 0 |
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| 1953 | 62.1 | 19 | 77.3 | 6 | 47 | 29 | 0.90 | 73 | 0 |
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| 1952 | 61.1 | 24 | 75.7 | 19 | 46.5 | 38 | 1.07 | 66 | 0 |
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| 1951 | 54.8 | 82 | 66.8 | 81 | 42.9 | 79 | 1.23 | 58 | 0 |
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| 1950 | 54.7 | 83 | 66.4 | 85 | 43.1 | 78 | 1.62 | 46 | 0 |
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| 1949 | 55.5 | 74 | 68.4 | 69 | 42.7 | 80 | 2.93 | 17 | 0 |
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| 1948 | 60.9 | 25 | 74.9 | 24 | 47 | 29 | 0.42 | 89 | 0 |
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| 1947 | 58.4 | 51 | 70 | 59 | 46.9 | 32 | 1.47 | 51 | 0 |
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| 1946 | 55.3 | 75 | 66.5 | 83 | 44.2 | 69 | 2.95 | 16 | 0 |
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| 1945 | 57.3 | 64 | 69.9 | 60 | 44.6 | 64 | 1.33 | 53 | 0 |
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| 1944 | 57.3 | 64 | 70.3 | 58 | 44.3 | 67 | 2.01 | 28 | 0 |
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| 1943 | 61.4 | 21 | 76.8 | 10 | 46 | 48 | 0.55 | 85 | 0 |
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| 1942 | 59.5 | 37 | 72.1 | 42 | 46.8 | 34 | 1.69 | 41 | 0 |
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| 1941 | 51.6 | 91 | 62 | 91 | 41.1 | 89 | 6.15 | 1 | 0 |
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| 1940 | 63.2 | 11 | 75.1 | 22 | 51.3 | 2 | 2.22 | 24 | 0 |
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| 1939 | 57.1 | 66 | 75 | 23 | 39.2 | 93 | 1.06 | 67 | 0 |
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| 1938 | 64.8 | 2 | 78.8 | 3 | 50.8 | 5 | 1.02 | 69 | 0 |
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| 1937 | 61.4 | 21 | 74.5 | 28 | 48.3 | 17 | 4.21 | 6 | 0 |
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| 1936 | 60.6 | 27 | 75.3 | 21 | 45.9 | 50 | 1.33 | 53 | 0 |
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| 1935 | 61.6 | 20 | 76.6 | 13 | 46.7 | 36 | 0.32 | 90 | 0 |
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| 1934 | 57 | 67 | 70.5 | 55 | 43.6 | 75 | 1.71 | 40 | 0 |
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