Every May in Alpena, MI from 1917 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 | 51.1 | 67 | 63.8 | 62 | 38.4 | 72 | 3.43 | 34 | 0 |
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| 2025 | 52.4 | 54 | 62.8 | 75 | 42.1 | 25 | 2.14 | 74 | 0 |
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| 2024 | 56.7 | 9 | 69.3 | 17 | 44.2 | 8 | 2.25 | 70 | 0 |
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| 2023 | 53.1 | 42 | 67.2 | 36 | 39 | 65 | 0.92 | 106 | 0 |
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| 2022 | 56.8 | 8 | 69.6 | 16 | 44 | 9 | 3.68 | 29 | 0 |
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| 2021 | 53.1 | 42 | 66.7 | 39 | 39.6 | 58 | 3.39 | 35 | 0 |
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| 2020 | 51.1 | 67 | 62.7 | 77 | 39.5 | 59 | 2.35 | 67 | 0 |
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| 2019 | 49.5 | 82 | 59.8 | 97 | 39.2 | 62 | 5.04 | 5 | 0 |
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| 2018 | 58 | 2 | 71.7 | 3 | 44.4 | 7 | 2.98 | 43 | 0 |
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| 2017 | 52.1 | 56 | 63.1 | 72 | 41 | 36 | 2.14 | 74 | 0 |
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| 2016 | 54.6 | 28 | 68.4 | 25 | 40.8 | 42 | 1.31 | 95 | 0 |
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| 2015 | 56.1 | 16 | 69.3 | 17 | 43 | 13 | 3.66 | 31 | 0 |
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| 2014 | 52.5 | 53 | 63.9 | 59 | 41.2 | 32 | 2.31 | 69 | 0 |
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| 2013 | 53.6 | 37 | 66.2 | 48 | 41 | 36 | 4.26 | 19 | 0 |
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| 2012 | 56.7 | 9 | 70.8 | 6 | 42.6 | 17 | 2.00 | 77 | 0 |
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| 2011 | 53.3 | 41 | 63.7 | 63 | 42.9 | 14 | 2.95 | 44 | 0 |
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| 2010 | 56.9 | 5 | 69.3 | 17 | 44.6 | 6 | 2.85 | 50 | 0 |
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| 2009 | 51.2 | 65 | 64.7 | 57 | 37.6 | 81 | 2.90 | 46 | 0 |
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| 2008 | 49.4 | 85 | 62.2 | 85 | 36.6 | 90 | 1.91 | 80 | 0 |
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| 2007 | 55.4 | 23 | 68.6 | 24 | 42.3 | 22 | 1.75 | 86 | 0 |
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| 2006 | 56.2 | 15 | 67.5 | 32 | 44.9 | 4 | 3.67 | 30 | 0 |
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| 2005 | 49.5 | 82 | 62.5 | 79 | 36.5 | 92 | 0.90 | 107 | 0 |
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| 2004 | 50.4 | 76 | 61 | 92 | 39.7 | 57 | 4.89 | 7 | 0 |
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| 2003 | 50 | 80 | 60.2 | 95 | 39.8 | 54 | 3.05 | 41 | 0 |
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| 2002 | 48 | 96 | 58.5 | 104 | 37.5 | 82 | 3.87 | 26 | 0 |
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| 2001 | 56.9 | 5 | 67.7 | 30 | 46.1 | 2 | 4.19 | 21 | 0 |
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| 2000 | 54.4 | 31 | 66.4 | 42 | 42.4 | 20 | 3.82 | 28 | 0 |
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| 1999 | 54.4 | 31 | 68.2 | 27 | 40.5 | 47 | 1.56 | 92 | 0 |
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| 1998 | 58 | 2 | 70.6 | 7 | 45.5 | 3 | 2.36 | 66 | 0 |
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| 1997 | 45.9 | 106 | 55.6 | 109 | 36.3 | 96 | 2.66 | 55 | 0 |
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| 1996 | 48.3 | 94 | 61.2 | 90 | 35.5 | 99 | 1.20 | 99 | 0 |
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| 1995 | 53.1 | 42 | 65.2 | 53 | 40.9 | 39 | 1.29 | 96 | 0 |
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| 1994 | 53.1 | 42 | 66.4 | 42 | 39.8 | 54 | 1.58 | 90 | 0 |
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| 1993 | 51.4 | 63 | 63 | 73 | 39.8 | 54 | 2.49 | 63 | 0 |
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| 1992 | 52.6 | 51 | 67 | 37 | 38.2 | 75 | 1.10 | 102 | 0 |
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| 1991 | 58.4 | 1 | 69.7 | 14 | 47 | 1 | 6.26 | 2 | 0 |
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| 1990 | 50.4 | 76 | 63.4 | 69 | 37.4 | 84 | 2.88 | 48 | 0 |
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| 1989 | 53.6 | 37 | 66.2 | 48 | 41.1 | 34 | 1.89 | 81 | 0 |
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| 1988 | 56 | 17 | 70.4 | 8 | 41.6 | 29 | 0.99 | 104 | 0 |
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| 1987 | 55.5 | 22 | 69.8 | 12 | 41.2 | 32 | 1.75 | 86 | 0 |
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| 1986 | 54.6 | 28 | 66.4 | 42 | 42.7 | 16 | 2.41 | 65 | 0 |
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| 1985 | 53.6 | 37 | 66.4 | 42 | 40.9 | 39 | 2.70 | 52 | 0 |
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| 1984 | 48.4 | 93 | 59.7 | 99 | 37.2 | 86 | 1.89 | 81 | 0 |
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| 1983 | 47 | 102 | 57.4 | 107 | 36.6 | 90 | 8.29 | 1 | 0 |
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| 1982 | 56.9 | 5 | 69 | 21 | 44.7 | 5 | 1.68 | 88 | 0 |
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| 1981 | 52 | 58 | 64.9 | 56 | 39.1 | 64 | 1.14 | 101 | 0 |
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| 1980 | 53.7 | 36 | 66.3 | 47 | 41.1 | 34 | 1.87 | 84 | 0 |
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| 1979 | 50.8 | 70 | 61.6 | 88 | 40 | 51 | 2.50 | 62 | 0 |
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| 1978 | 55.4 | 23 | 67.6 | 31 | 43.1 | 11 | 2.69 | 53 | 0 |
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| 1977 | 56.5 | 11 | 72.3 | 1 | 40.7 | 44 | 1.85 | 85 | 0 |
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| 1976 | 50.8 | 70 | 62.5 | 79 | 39.2 | 62 | 2.43 | 64 | 0 |
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| 1975 | 57.9 | 4 | 72 | 2 | 43.9 | 10 | 4.45 | 16 | 0 |
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| 1974 | 48.1 | 95 | 59.9 | 96 | 36.4 | 94 | 2.61 | 58 | 0 |
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| 1973 | 49.1 | 88 | 60.7 | 93 | 37.5 | 82 | 4.83 | 9 | 0 |
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| 1972 | 52.7 | 49 | 66.5 | 41 | 38.9 | 66 | 2.18 | 72 | 0 |
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| 1971 | 50.2 | 79 | 63.5 | 67 | 36.9 | 89 | 2.87 | 49 | 0 |
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| 1970 | 51.6 | 61 | 62.3 | 84 | 41 | 36 | 1.99 | 78 | 0 |
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| 1969 | 50.3 | 78 | 62.9 | 74 | 37.7 | 79 | 3.11 | 40 | 0 |
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| 1968 | 47.8 | 98 | 59.5 | 100 | 36.2 | 97 | 2.55 | 59 | 0 |
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| 1967 | 46.1 | 105 | 59.2 | 102 | 33 | 109 | 1.94 | 79 | 0 |
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| 1966 | 46.8 | 104 | 59.8 | 97 | 33.8 | 107 | 1.05 | 103 | 0 |
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| 1965 | 54.9 | 26 | 69.2 | 20 | 40.6 | 46 | 4.24 | 20 | 0 |
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| 1964 | 56.3 | 14 | 70 | 11 | 42.6 | 17 | 3.04 | 42 | 0 |
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| 1963 | 48.5 | 92 | 61.5 | 89 | 35.6 | 98 | 5.46 | 3 | 0 |
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| 1962 | 55.7 | 20 | 68.9 | 23 | 42.5 | 19 | 3.49 | 32 | 0 |
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| 1961 | 48.6 | 91 | 63.2 | 71 | 34.1 | 104 | 1.45 | 93 | 0 |
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| 1960 | 52.8 | 47 | 63.5 | 67 | 42.2 | 24 | 4.29 | 18 | 0 |
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| 1959 | | | 69 | 21 | 42.4 | 20 | 2.20 | 71 | 4 |
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| 1958 | | | 65.1 | 55 | | | 1.22 | 98 | 5 |
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| 1957 | 51.1 | 67 | 63.9 | 59 | 38.9 | 66 | 4.09 | 23 | 1 |
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| 1956 | 51.7 | 60 | 65.2 | 53 | 38.3 | 73 | 2.05 | 76 | 1 |
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| 1955 | | | | | 42.3 | 22 | 2.69 | 53 | 5 |
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| 1954 | 49.5 | 82 | 62 | 86 | 37 | 87 | 3.26 | 38 | 0 |
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| 1953 | 53.1 | 42 | 66.8 | 38 | 39.4 | 61 | 4.17 | 22 | 0 |
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| 1952 | 50.7 | 73 | 62.5 | 79 | 38.9 | 66 | 1.58 | 90 | 1 |
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| 1951 | 55.7 | 20 | 70.1 | 10 | 41.4 | 30 | 1.19 | 100 | 0 |
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| 1950 | 52.1 | 56 | 65.5 | 52 | 38.3 | 73 | 0.53 | 108 | 1 |
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| 1949 | 52.7 | 49 | 67.5 | 32 | 38 | 77 | 2.15 | 73 | 0 |
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| 1948 | 49.6 | 81 | 63.6 | 65 | 35.5 | 99 | 2.72 | 51 | 1 |
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| 1947 | 47.6 | 99 | 58.2 | 105 | 37 | 87 | 4.08 | 24 | 0 |
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| 1946 | 49.1 | 88 | 61.9 | 87 | 36.4 | 94 | 3.35 | 36 | 0 |
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| 1945 | 47 | 102 | 59.5 | 100 | 34.6 | 103 | 4.77 | 12 | 0 |
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| 1944 | 56.5 | 11 | 71.1 | 5 | 42 | 27 | 2.52 | 61 | 0 |
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| 1943 | 50.6 | 74 | 63.3 | 70 | 38 | 77 | 2.54 | 60 | 0 |
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| 1942 | 51.3 | 64 | 62.5 | 79 | 40.1 | 50 | 4.31 | 17 | 0 |
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| 1941 | 55.9 | 18 | 69.8 | 12 | 42 | 27 | 4.04 | 25 | 0 |
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| 1940 | 50.8 | 70 | 62.8 | 75 | 38.7 | 70 | 2.62 | 57 | 0 |
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| 1939 | 54.1 | 35 | 67.5 | 32 | 40.8 | 42 | 3.87 | 26 | 0 |
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| 1938 | 51.2 | 65 | 63.9 | 59 | 38.5 | 71 | 3.30 | 37 | 0 |
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| 1937 | 54.2 | 34 | 68.4 | 25 | 40 | 51 | 0.98 | 105 | 0 |
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| 1936 | 55.9 | 18 | 70.3 | 9 | 41.4 | 30 | 2.89 | 47 | 0 |
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| 1935 | 47.2 | 100 | 60.4 | 94 | 34.1 | 104 | 1.33 | 94 | 0 |
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| 1934 | 54.8 | 27 | 71.6 | 4 | 38.1 | 76 | 1.24 | 97 | 0 |
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| 1933 | 53.4 | 40 | 65.9 | 50 | 40.9 | 39 | 4.78 | 11 | 0 |
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| 1932 | 51.9 | 59 | 63.6 | 65 | 40.2 | 49 | 4.96 | 6 | 0 |
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| 1931 | 52.8 | 47 | 66.7 | 39 | 38.8 | 69 | 3.47 | 33 | 0 |
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| 1930 | 55.1 | 25 | 68.2 | 27 | 42.1 | 25 | 4.51 | 15 | 0 |
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| 1929 | 49.3 | 86 | 61.2 | 90 | 37.4 | 84 | 4.72 | 13 | 0 |
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| 1928 | 52.2 | 55 | 64.5 | 58 | 39.9 | 53 | 1.66 | 89 | 0 |
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| 1927 | 49.1 | 88 | 58.7 | 103 | 39.5 | 59 | 4.87 | 8 | 0 |
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| 1926 | 50.6 | 74 | 65.7 | 51 | 35.5 | 99 | 1.89 | 81 | 0 |
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| 1925 | 48 | 96 | 62.4 | 83 | 33.6 | 108 | 0.49 | 110 | 0 |
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| 1924 | 45.4 | 107 | 56.8 | 108 | 34.1 | 104 | 4.82 | 10 | 0 |
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| 1923 | 49.2 | 87 | 63.7 | 63 | 34.7 | 102 | 2.94 | 45 | 0 |
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| 1922 | 56.4 | 13 | 69.7 | 14 | 43.1 | 11 | 2.34 | 68 | 0 |
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| 1921 | 54.6 | 28 | 66.4 | 42 | 42.8 | 15 | 2.66 | 55 | 0 |
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| 1920 | 52.6 | 51 | 67.5 | 32 | 37.7 | 79 | 0.50 | 109 | 0 |
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| 1919 | 51.5 | 62 | 62.6 | 78 | 40.3 | 48 | 4.58 | 14 | 0 |
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| 1918 | 54.4 | 31 | 68.1 | 29 | 40.7 | 44 | 5.31 | 4 | 0 |
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| 1917 | 47.1 | 101 | 57.7 | 106 | 36.5 | 92 | 3.20 | 39 | 0 |
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