Every 1 to 9 October in Rapid City Downtown, SD from 1888 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 | 64.8 | 3 | 78.3 | 4 | 51.2 | 5 | 0.00 | 102 | 0 |
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| 2025 | 61.3 | 15 | 73.1 | 24 | 49.6 | 8 | 0.63 | 24 | 0 |
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| 2024 | 63.8 | 5 | 77.7 | 6 | 50 | 7 | 0.00 | 102 | 0 |
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| 2023 | 55.7 | 43 | 66.4 | 52 | 44.9 | 34 | 0.84 | 16 | 0 |
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| 2022 | 55.8 | 42 | 65.2 | 67 | 46.4 | 20 | 0.48 | 33 | 0 |
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| 2021 | 65.2 | 2 | 77.7 | 6 | 52.7 | 2 | 0.32 | 45 | 0 |
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| 2020 | 59.3 | 23 | 72.3 | 28 | 46.3 | 21 | trace | 93 | 0 |
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| 2019 | 47.5 | 99 | 58.3 | 98 | 36.7 | 99 | 0.39 | 38 | 0 |
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| 2018 | 43.3 | 110 | 53.4 | 112 | 33.2 | 110 | 0.75 | 18 | 0 |
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| 2017 | 49.4 | 90 | 58.2 | 99 | 40.7 | 69 | 0.67 | 23 | 0 |
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| 2016 | 53.7 | 62 | 65.9 | 57 | 41.6 | 62 | 0.27 | 50 | 0 |
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| 2015 | 54.8 | 50 | 62.3 | 85 | 47.2 | 15 | 0.59 | 27 | 0 |
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| 2014 | 51.1 | 84 | 61.6 | 89 | 40.7 | 69 | 0.16 | 57 | 0 |
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| 2013 | 48.6 | 96 | 57 | 101 | 40.2 | 76 | 3.14 | 1 | 0 |
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| 2012 | 45.1 | 106 | 54.8 | 108 | 35.4 | 103 | trace | 93 | 0 |
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| 2011 | 63.2 | 6 | 74.2 | 18 | 52.1 | 4 | 0.70 | 22 | 0 |
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| 2010 | 60.9 | 16 | 74.4 | 17 | 47.3 | 14 | 0.36 | 41 | 0 |
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| 2009 | 37.9 | 114 | 45.2 | 115 | 30.6 | 113 | 1.62 | 5 | 0 |
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| 2008 | 57.1 | 34 | 68.4 | 40 | 45.8 | 25 | 0.07 | 68 | 0 |
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| 2007 | 55.6 | 44 | 67.7 | 47 | 43.4 | 46 | 0.18 | 55 | 0 |
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| 2006 | 55.9 | 41 | 65.9 | 57 | 46 | 23 | 0.01 | 89 | 0 |
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| 2005 | 49.7 | 89 | 59.6 | 96 | 39.9 | 81 | 0.97 | 12 | 0 |
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| 2004 | 56.7 | 37 | 71.6 | 29 | 41.8 | 56 | trace | 93 | 0 |
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| 2003 | 62.9 | 7 | 75.7 | 11 | 50.2 | 6 | 0.00 | 102 | 0 |
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| 2002 | 46.1 | 104 | 54.8 | 108 | 37.4 | 97 | 0.56 | 28 | 0 |
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| 2001 | 53.8 | 59 | 65 | 69 | 42.7 | 51 | 0.62 | 26 | 0 |
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| 2000 | 41.8 | 112 | 52.1 | 113 | 31.6 | 112 | 0.32 | 45 | 0 |
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| 1999 | 49.9 | 88 | 60.8 | 91 | 39.1 | 88 | 0.05 | 77 | 0 |
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| 1998 | 47.9 | 98 | 55.3 | 106 | 40.6 | 73 | 2.96 | 2 | 0 |
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| 1997 | 62 | 11 | 75.4 | 12 | 48.6 | 10 | 0.35 | 42 | 0 |
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| 1996 | 53.2 | 68 | 65.3 | 64 | 41.1 | 65 | 0.06 | 71 | 0 |
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| 1971 | 53.7 | 62 | 63.6 | 81 | 43.8 | 40 | 0.53 | 29 | 0 |
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| 1970 | 53.4 | 67 | 66.3 | 54 | 40.4 | 74 | 0.32 | 45 | 0 |
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| 1969 | 52.4 | 77 | 63.7 | 80 | 41.1 | 65 | 0.77 | 17 | 0 |
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| 1968 | 53.5 | 65 | 66.6 | 50 | 40.4 | 74 | trace | 93 | 0 |
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| 1967 | 58.9 | 24 | 69.7 | 35 | 48.2 | 11 | 0.09 | 66 | 0 |
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| 1966 | 54.7 | 51 | 68.4 | 40 | 40.9 | 68 | 0.44 | 36 | 0 |
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| 1965 | 58.9 | 24 | 74.6 | 16 | 43.3 | 48 | trace | 93 | 0 |
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| 1964 | 51.5 | 82 | 64.7 | 72 | 38.3 | 91 | 0.00 | 102 | 0 |
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| 1963 | 68.9 | 1 | 83.2 | 1 | 54.6 | 1 | 0.00 | 102 | 0 |
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| 1962 | | | 65.9 | 57 | | | 1.56 | 6 | 1 |
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| 1961 | 53.8 | 59 | 65.9 | 57 | 41.7 | 57 | 0.13 | 61 | 0 |
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| 1960 | 62.2 | 10 | 77.2 | 8 | 47.2 | 15 | 0.00 | 102 | 0 |
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| 1959 | 45.1 | 106 | 55.3 | 106 | 34.9 | 105 | 0.06 | 71 | 0 |
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| 1958 | 56.9 | 36 | 70.3 | 33 | 43.6 | 43 | 0.04 | 79 | 0 |
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| 1957 | 54.1 | 57 | 64.4 | 73 | 43.7 | 41 | 0.15 | 58 | 0 |
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| 1956 | 59.8 | 20 | 74.7 | 15 | 45 | 31 | 0.00 | 102 | 0 |
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| 1955 | 57.2 | 32 | 70.3 | 33 | 44.1 | 37 | 0.10 | 64 | 0 |
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| 1954 | 53.1 | 69 | 65 | 69 | 41.2 | 64 | 0.19 | 54 | 0 |
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| 1953 | 58.7 | 26 | 73.7 | 20 | 43.7 | 41 | 0.01 | 89 | 0 |
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| 1952 | 49.1 | 92 | 63.6 | 81 | 34.6 | 107 | 0.00 | 102 | 0 |
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| 1951 | 56.1 | 39 | 66 | 56 | 46.1 | 22 | 1.13 | 10 | 0 |
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| 1950 | 47 | 103 | 58.8 | 97 | 35.2 | 104 | 0.30 | 49 | 0 |
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| 1949 | 54.6 | 53 | 65.2 | 67 | 43.9 | 39 | 0.92 | 14 | 0 |
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| 1948 | 53.1 | 69 | 66.6 | 50 | 39.7 | 82 | 0.22 | 53 | 0 |
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| 1947 | 61.8 | 13 | 76 | 10 | 47.6 | 13 | 0.01 | 89 | 0 |
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| 1946 | 47.3 | 101 | 57 | 101 | 37.6 | 96 | 1.96 | 4 | 0 |
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| 1945 | 57.1 | 34 | 70.7 | 31 | 43.6 | 43 | 0.00 | 102 | 0 |
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| 1944 | 48.9 | 95 | 61.7 | 88 | 36.1 | 101 | 0.51 | 31 | 0 |
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| 1943 | 62 | 11 | 78.1 | 5 | 45.9 | 24 | 0.00 | 102 | 0 |
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| 1942 | 60.1 | 18 | 73.6 | 21 | 46.6 | 18 | 0.11 | 62 | 0 |
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| 1941 | 47.4 | 100 | 57.8 | 100 | 37.1 | 98 | 0.73 | 19 | 0 |
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| 1940 | 55.6 | 44 | 66.2 | 55 | 45 | 31 | 0.71 | 21 | 0 |
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| 1939 | 51.7 | 81 | 61.6 | 89 | 41.9 | 54 | 1.14 | 9 | 0 |
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| 1938 | 62.9 | 7 | 73.6 | 21 | 52.2 | 3 | 0.08 | 67 | 0 |
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| 1937 | 55 | 47 | 69.3 | 37 | 40.7 | 69 | 0.06 | 71 | 0 |
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| 1936 | 54.7 | 51 | 67.8 | 46 | 41.7 | 57 | 0.04 | 79 | 0 |
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| 1935 | 52.3 | 78 | 65.7 | 61 | 39 | 89 | 0.04 | 79 | 0 |
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| 1934 | 59.7 | 21 | 74 | 19 | 45.4 | 29 | 0.02 | 85 | 0 |
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| 1933 | 58.3 | 27 | 73.4 | 23 | 43.1 | 49 | trace | 93 | 0 |
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| 1932 | 47.2 | 102 | 56.8 | 103 | 37.7 | 95 | 0.94 | 13 | 0 |
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| 1931 | 57.2 | 32 | 69.7 | 35 | 44.7 | 35 | 0.15 | 58 | 0 |
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| 1930 | 56 | 40 | 64.1 | 77 | 47.9 | 12 | 2.77 | 3 | 0 |
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| 1929 | 54.2 | 56 | 66.4 | 52 | 41.9 | 54 | 0.23 | 52 | 0 |
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| 1928 | 58.3 | 27 | 73.1 | 24 | 43.6 | 43 | 0.00 | 102 | 0 |
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| 1927 | 45.7 | 105 | 56.4 | 104 | 34.9 | 105 | 0.72 | 20 | 0 |
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| 1926 | 54.6 | 53 | 67.4 | 48 | 41.7 | 57 | 0.33 | 44 | 0 |
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| 1925 | 39 | 113 | 48.2 | 114 | 29.8 | 114 | 0.37 | 39 | 0 |
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| 1924 | 51 | 85 | 61.8 | 87 | 40.2 | 76 | 1.01 | 11 | 0 |
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| 1923 | 55 | 47 | 64.3 | 75 | 45.7 | 27 | 0.47 | 34 | 0 |
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| 1922 | 59.9 | 19 | 75.2 | 13 | 44.7 | 35 | 0.05 | 77 | 0 |
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| 1921 | 54.3 | 55 | 68.3 | 42 | 40.2 | 76 | 0.00 | 102 | 0 |
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| 1920 | 62.6 | 9 | 79.6 | 2 | 45.7 | 27 | 0.00 | 102 | 0 |
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| 1919 | 49.1 | 92 | 60.3 | 94 | 37.9 | 94 | 1.25 | 8 | 0 |
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| 1918 | 58.2 | 30 | 71.4 | 30 | 45 | 31 | 0.01 | 89 | 0 |
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| 1917 | 55 | 47 | 69 | 38 | 41 | 67 | 0.07 | 68 | 0 |
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| 1916 | 43.7 | 109 | 53.6 | 111 | 33.9 | 109 | 0.27 | 50 | 0 |
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| 1915 | 48.2 | 97 | 60.6 | 92 | 35.8 | 102 | 0.46 | 35 | 0 |
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| 1914 | 53.1 | 69 | 63.9 | 79 | 42.2 | 53 | 0.37 | 39 | 0 |
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| 1913 | 50.1 | 87 | 60.4 | 93 | 39.7 | 82 | 1.28 | 7 | 0 |
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| 1912 | 51.2 | 83 | 64 | 78 | 38.3 | 91 | 0.07 | 68 | 0 |
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| 1911 | 53.9 | 58 | 64.8 | 71 | 43 | 50 | 0.43 | 37 | 0 |
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| 1910 | 60.8 | 17 | 75 | 14 | 46.6 | 18 | trace | 93 | 0 |
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| 1909 | 58 | 31 | 70.6 | 32 | 45.4 | 29 | 0.88 | 15 | 0 |
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| 1908 | 52.8 | 74 | 65.4 | 63 | 40.1 | 79 | 0.49 | 32 | 0 |
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| 1907 | 53.8 | 59 | 68.3 | 42 | 39.2 | 85 | 0.02 | 85 | 0 |
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| 1906 | 53.7 | 62 | 67.9 | 45 | 39.4 | 84 | 0.14 | 60 | 0 |
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| 1905 | 58.3 | 27 | 72.6 | 26 | 44.1 | 37 | 0.03 | 84 | 0 |
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| 1904 | 56.2 | 38 | 68.9 | 39 | 43.4 | 46 | 0.06 | 71 | 0 |
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| 1903 | 52.9 | 73 | 64.3 | 75 | 41.6 | 62 | 0.04 | 79 | 0 |
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| 1902 | 52.8 | 74 | 66.7 | 49 | 39 | 89 | trace | 93 | 0 |
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| 1901 | 52.1 | 80 | 63.4 | 83 | 40.7 | 69 | 0.63 | 24 | 0 |
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| 1900 | 52.3 | 78 | 65.3 | 64 | 39.2 | 85 | 0.06 | 71 | 0 |
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| 1899 | 55.3 | 46 | 68 | 44 | 42.6 | 52 | 0.04 | 79 | 0 |
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| 1898 | 44.7 | 108 | 55.4 | 105 | 34 | 108 | 0.06 | 71 | 0 |
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| 1897 | 59.6 | 22 | 72.6 | 26 | 46.7 | 17 | 0.11 | 62 | 0 |
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| 1896 | 52.8 | 74 | 65.6 | 62 | 40 | 80 | trace | 93 | 0 |
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| 1895 | 53.1 | 69 | 64.4 | 73 | 41.7 | 57 | 0.02 | 85 | 0 |
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| 1894 | 49 | 94 | 60 | 95 | 38 | 93 | 0.10 | 64 | 0 |
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| 1893 | 49.2 | 91 | 62.2 | 86 | 36.2 | 100 | 0.52 | 30 | 0 |
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| 1892 | 64 | 4 | 78.6 | 3 | 49.4 | 9 | 0.02 | 85 | 0 |
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| 1891 | 43.3 | 110 | 53.9 | 110 | 32.8 | 111 | 0.31 | 48 | 0 |
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| 1890 | 51 | 85 | 62.8 | 84 | 39.2 | 85 | 0.18 | 55 | 0 |
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| 1889 | 61.4 | 14 | 77.1 | 9 | 45.8 | 25 | 0.00 | 102 | 0 |
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| 1888 | 53.5 | 65 | 65.3 | 64 | 41.7 | 57 | 0.34 | 43 | 0 |
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