Every January in McCook, NE from 1895 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 | 31.4 | 24 | 47.2 | 14 | 15.6 | 47 | trace | 91 | 0 |
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| 2025 | 26.4 | 60 | 40.1 | 55 | 12.6 | 62 | trace | 91 | 0 |
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| 2024 | 25 | 66 | 36 | 73 | 14.1 | 56 | 0.45 | 32 | 0 |
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| 2023 | 25.9 | 62 | 33.8 | 80 | 17.9 | 24 | 0.15 | 63 | 3 |
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| 2022 | 28 | 49 | 42.6 | 38 | 13.4 | 59 | 0.68 | 18 | 0 |
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| 2021 | 30.4 | 33 | 41.2 | 48 | 19.6 | 11 | 0.32 | 40 | 0 |
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| 2020 | 31.8 | 20 | 44.3 | 30 | 19.4 | 13 | 0.29 | 45 | 0 |
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| 2019 | 29.6 | 39 | 40.9 | 51 | 18.4 | 22 | 0.10 | 74 | 0 |
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| 2018 | 26.7 | 56 | 39.1 | 59 | 14.3 | 54 | 0.97 | 10 | 0 |
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| 2017 | 28.2 | 47 | 39.1 | 59 | 17.4 | 28 | 0.70 | 16 | 0 |
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| 2016 | 31.9 | 19 | 44.5 | 29 | 19.4 | 13 | 0.02 | 88 | 0 |
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| 2015 | 31.1 | 27 | 44.2 | 31 | 18 | 23 | 0.12 | 70 | 0 |
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| 2014 | 29.8 | 36 | 45 | 25 | 14.5 | 53 | 0.20 | 54 | 0 |
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| 2013 | 26.6 | 57 | 37.9 | 63 | 15.3 | 49 | 0.05 | 82 | 0 |
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| 2012 | 33.2 | 12 | 49 | 8 | 17.5 | 26 | trace | 91 | 0 |
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| 2011 | 25.7 | 64 | 39.3 | 58 | 12.1 | 64 | 0.15 | 63 | 0 |
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| 2010 | 27.5 | 51 | 38.5 | 62 | 16.5 | 38 | 0.05 | 82 | 0 |
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| 2009 | 31.4 | 24 | 47.1 | 17 | 15.7 | 46 | 0.14 | 67 | 0 |
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| 2008 | 24.3 | 70 | 36 | 73 | 12.6 | 62 | 0.02 | 88 | 0 |
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| 2007 | 18.4 | 86 | 29.2 | 88 | 7.5 | 82 | 0.25 | 48 | 0 |
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| 2006 | 39.9 | 1 | 55.8 | 2 | 24.1 | 2 | 0.12 | 70 | 0 |
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| 2005 | 27.5 | 51 | 37.7 | 65 | 17.3 | 29 | 0.22 | 53 | 0 |
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| 2004 | 26.9 | 55 | 40.5 | 52 | 13.3 | 60 | 0.08 | 78 | 0 |
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| 2003 | 31.4 | 24 | 46.1 | 22 | 16.7 | 36 | 0.04 | 87 | 0 |
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| 2002 | 34.1 | 9 | 49.1 | 7 | 19.1 | 16 | 0.18 | 59 | 0 |
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| 2001 | 30.7 | 31 | 42.1 | 43 | 19.3 | 15 | 0.61 | 23 | 0 |
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| 2000 | 30.9 | 29 | 44.6 | 26 | 17.2 | 31 | 0.07 | 79 | 0 |
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| 1999 | 31.6 | 22 | 44.6 | 26 | 18.7 | 19 | 0.15 | 63 | 2 |
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| 1998 | 31.1 | 27 | 42.5 | 40 | 19.7 | 10 | | | 0 |
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| 1997 | 26.2 | 61 | 40.5 | 52 | 11.8 | 66 | | | 1 |
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| 1996 | 23 | 74 | 36.9 | 68 | 9.8 | 77 | 0.39 | 35 | 2 |
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| 1995 | 28.4 | 45 | 40.1 | 55 | 16.6 | 37 | 0.30 | 43 | 0 |
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| 1994 | 26.6 | 57 | 37.8 | 64 | 15.5 | 48 | 1.00 | 9 | 0 |
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| 1993 | 20.4 | 82 | 29.5 | 87 | 11.3 | 70 | 1.21 | 5 | 0 |
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| 1991 | 24.8 | 68 | 36.9 | 68 | 12.7 | 61 | 0.35 | 37 | 0 |
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| 1990 | 32.7 | 16 | 46.2 | 21 | 19.1 | 16 | 1.27 | 4 | 0 |
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| 1967 | 32.5 | 17 | 46.4 | 20 | 18.7 | 19 | 0.28 | 46 | 0 |
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| 1966 | 23 | 74 | 36.1 | 72 | 9.9 | 76 | 0.62 | 22 | 0 |
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| 1965 | 33.1 | 14 | 49 | 8 | 17.2 | 31 | 0.85 | 13 | 0 |
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| 1964 | 35.1 | 7 | 52.3 | 4 | 17.9 | 24 | trace | 91 | 0 |
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| 1963 | 18.5 | 85 | 32.9 | 83 | 4 | 88 | 0.59 | 26 | 0 |
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| 1962 | 25.9 | 62 | 41.2 | 48 | 10.5 | 74 | 0.06 | 80 | 0 |
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| 1961 | 30.9 | 29 | 46.8 | 19 | 14.9 | 51 | 0.00 | 97 | 0 |
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| 1960 | 24.2 | 71 | 36.5 | 71 | 12 | 65 | 1.49 | 2 | 0 |
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| 1959 | 26.5 | 59 | 41.9 | 44 | 11.5 | 68 | 0.96 | 11 | 1 |
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| 1958 | 33.5 | 11 | 48.5 | 10 | 18.5 | 21 | 0.11 | 72 | 0 |
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| 1957 | 20.7 | 81 | 35 | 78 | 6.7 | 84 | 0.24 | 51 | 1 |
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| 1956 | 28.5 | 43 | 42.2 | 42 | 14.9 | 51 | 0.26 | 47 | 0 |
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| 1955 | 24.1 | 72 | 36.7 | 70 | 11.5 | 68 | 0.54 | 27 | 0 |
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| 1954 | 29.3 | 40 | 42.7 | 36 | 15.8 | 44 | 0.06 | 80 | 0 |
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| 1953 | 36.6 | 4 | 49.5 | 5 | 23.7 | 3 | 0.00 | 97 | 1 |
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| 1952 | 29.7 | 37 | 43.1 | 35 | 16.4 | 39 | 0.10 | 74 | 0 |
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| 1951 | 29.2 | 42 | 43.4 | 34 | 15 | 50 | 0.02 | 88 | 0 |
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| 1950 | 23 | 74 | 37.6 | 67 | 8.5 | 79 | 0.13 | 69 | 0 |
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| 1949 | 14.6 | 87 | 24.4 | 91 | 4.7 | 86 | 1.05 | 8 | 0 |
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| 1948 | 28.1 | 48 | 40.1 | 55 | 16.2 | 41 | 0.32 | 40 | 3 |
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| 1947 | 30.7 | 31 | 44.1 | 32 | 17.3 | 29 | 0.35 | 37 | 1 |
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| 1946 | 31.5 | 23 | 46.9 | 18 | 16.2 | 41 | 0.15 | 63 | 0 |
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| 1945 | 30.3 | 34 | 41 | 50 | 19.5 | 12 | 0.66 | 19 | 0 |
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| 1944 | 29.7 | 37 | 41.8 | 45 | 17.5 | 26 | 2.36 | 1 | 0 |
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| 1943 | 27.3 | 53 | 43.9 | 33 | 11 | 71 | 0.18 | 59 | 1 |
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| 1942 | 25 | 66 | 35.8 | 75 | 14.2 | 55 | 0.35 | 37 | 0 |
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| 1941 | 27.8 | 50 | 39 | 61 | 16.2 | 41 | 1.46 | 3 | 2 |
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| 1940 | 13.1 | 89 | 22.6 | 92 | 4.2 | 87 | 0.93 | 12 | 2 |
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| 1939 | 35.6 | 5 | 47.5 | 12 | 23.6 | 4 | 0.63 | 21 | 1 |
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| 1938 | | | 46 | 23 | | | 0.25 | 48 | 4 |
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| 1937 | | | 30 | 86 | | | | | 6 |
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| 1936 | 29.3 | 40 | 41.4 | 46 | 16.3 | 40 | 0.47 | 31 | 3 |
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| 1935 | 33.2 | 12 | 47.4 | 13 | 19 | 18 | 0.05 | 82 | 0 |
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| 1934 | 34.8 | 8 | 49.2 | 6 | 20.6 | 6 | 0.32 | 40 | 1 |
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| 1933 | 36.7 | 3 | 56.5 | 1 | 17 | 34 | 0.00 | 97 | 0 |
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| 1932 | 24.4 | 69 | 35.2 | 77 | 13.6 | 57 | 0.80 | 14 | 0 |
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| 1931 | 37 | 2 | 53.5 | 3 | 20.5 | 8 | 0.30 | 43 | 0 |
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| 1930 | 14.2 | 88 | 26.3 | 90 | 1.8 | 89 | 1.10 | 7 | 1 |
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| 1929 | 22.1 | 79 | 33.5 | 81 | 10.6 | 73 | 0.18 | 59 | 2 |
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| 1928 | 32.9 | 15 | 48.3 | 11 | 17.2 | 31 | 0.14 | 67 | 2 |
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| 1927 | 28.4 | 45 | 41.4 | 46 | 15.8 | 44 | 0.60 | 24 | 2 |
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| 1926 | 32.5 | 17 | 44.6 | 26 | 20.3 | 9 | 0.77 | 15 | 1 |
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| 1925 | 21.2 | 80 | 33 | 82 | 9.4 | 78 | 0.45 | 32 | 0 |
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| 1924 | 25.4 | 65 | 42.6 | 38 | 8.3 | 81 | 0.50 | 29 | 0 |
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| 1923 | 33.9 | 10 | 47.2 | 14 | 20.6 | 6 | 0.00 | 97 | 1 |
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| 1922 | 23.1 | 73 | 37.7 | 65 | 8.5 | 79 | 0.05 | 82 | 0 |
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| 1920 | 31.8 | 20 | 42.7 | 36 | 20.8 | 5 | 0.17 | 62 | 0 |
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| 1919 | 28.5 | 43 | 40.2 | 54 | 16.8 | 35 | 0.00 | 97 | 0 |
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| 1918 | 18.7 | 84 | 31 | 85 | 6.4 | 85 | 0.66 | 19 | 0 |
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| 1917 | 27 | 54 | 42.3 | 41 | 11.7 | 67 | 0.11 | 72 | 0 |
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| 1916 | 19.5 | 83 | 31.8 | 84 | 7.2 | 83 | 1.16 | 6 | 0 |
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| 1915 | 23 | 74 | 35.7 | 76 | 10.4 | 75 | 0.44 | 34 | 0 |
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| 1914 | 35.3 | 6 | 45.7 | 24 | 24.9 | 1 | trace | 91 | 0 |
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| 1913 | | | | | | | 0.00 | 97 | 13 |
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| 1912 | | | 27.9 | 89 | 1.3 | 90 | 0.00 | 97 | 5 |
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| 1911 | 30.3 | 34 | 47.2 | 14 | 13.5 | 58 | 0.05 | 82 | 0 |
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| 1910 | 22.3 | 78 | 34.5 | 79 | 11 | 71 | 0.00 | 97 | 2 |
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| 1908 | | | | | | | 0.10 | 74 | 31 |
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| 1907 | | | | | | | 0.38 | 36 | 31 |
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| 1906 | | | | | | | 0.25 | 48 | 31 |
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| 1905 | | | | | | | 0.70 | 16 | 31 |
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| 1904 | | | | | | | 0.20 | 54 | 31 |
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| 1903 | | | | | | | 0.10 | 74 | 31 |
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| 1902 | | | | | | | 0.52 | 28 | 31 |
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| 1901 | | | | | | | 0.20 | 54 | 31 |
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| 1900 | | | | | | | 0.20 | 54 | 31 |
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| 1899 | | | | | | | 0.50 | 29 | 31 |
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| 1898 | | | | | | | 0.20 | 54 | 31 |
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| 1897 | | | | | | | trace | 91 | 31 |
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| 1896 | | | | | | | 0.24 | 51 | 31 |
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| 1895 | | | | | | | 0.60 | 24 | 31 |
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