Every May in Mcgrath, AK from 1939 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 | 44.3 | 56 | 53.2 | 63 | 35.4 | 42 | 2.00 | 4 | 0 |
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| 2025 | 48.5 | 22 | 58.4 | 34 | 38.7 | 12 | 1.14 | 29 | 0 |
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| 2024 | 46.6 | 42 | 57.1 | 44 | 36.1 | 35 | 1.34 | 19 | 0 |
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| 2023 | 46.8 | 41 | 55.9 | 50 | 37.7 | 16 | 0.29 | 80 | 1 |
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| 2022 | | | | | | | | | 7 |
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| 2021 | 48.7 | 20 | 61.1 | 12 | 36 | 36 | 0.44 | 64 | 2 |
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| 2020 | 51.5 | 4 | 62.9 | 4 | 40 | 7 | 0.47 | 62 | 0 |
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| 2019 | 50 | 10 | 60.7 | 15 | 39.4 | 8 | 0.86 | 43 | 0 |
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| 2018 | 47.2 | 36 | 56.7 | 45 | 37.7 | 16 | 1.09 | 31 | 0 |
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| 2017 | 48.6 | 21 | 59.5 | 24 | 37.7 | 16 | 1.41 | 14 | 0 |
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| 2016 | 50.6 | 7 | 60.4 | 18 | 40.8 | 3 | 1.17 | 27 | 0 |
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| 2015 | 52.1 | 3 | 63.3 | 3 | 41 | 2 | 0.38 | 72 | 0 |
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| 2014 | 49 | 16 | 59.7 | 22 | 38.2 | 15 | 0.92 | 40 | 0 |
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| 2013 | 42.2 | 70 | 54.3 | 58 | 30.1 | 76 | 0.07 | 87 | 0 |
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| 2012 | 46.2 | 46 | 58 | 36 | 34.4 | 58 | 0.75 | 46 | 0 |
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| 2011 | 48.4 | 24 | 61.6 | 7 | 35.1 | 48 | 0.60 | 54 | 0 |
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| 2010 | 50.6 | 7 | 63.7 | 2 | 37.5 | 22 | 0.52 | 57 | 0 |
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| 2009 | 47.5 | 32 | 59.4 | 25 | 35.6 | 41 | 0.55 | 55 | 0 |
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| 2008 | 46.6 | 42 | 57.4 | 42 | 35.8 | 38 | 0.35 | 75 | 0 |
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| 2007 | 49.8 | 11 | 61.1 | 12 | 38.5 | 13 | 1.41 | 14 | 0 |
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| 2006 | 47.9 | 28 | 59.4 | 25 | 36.4 | 32 | 0.28 | 82 | 0 |
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| 2005 | 53 | 1 | 65.4 | 1 | 40.7 | 4 | 1.80 | 7 | 0 |
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| 2004 | 52.3 | 2 | 61.4 | 10 | 43.3 | 1 | 2.01 | 3 | 0 |
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| 2003 | 44.8 | 55 | 54.7 | 55 | 34.9 | 49 | 1.37 | 16 | 0 |
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| 2002 | 49.3 | 15 | 60.4 | 18 | 38.3 | 14 | 1.02 | 34 | 0 |
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| 2001 | 39.9 | 78 | 50.2 | 72 | 29.7 | 79 | 0.45 | 63 | 0 |
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| 2000 | 42.7 | 68 | 52.9 | 64 | 32.5 | 70 | 0.87 | 41 | 0 |
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| 1999 | 44.9 | 52 | 55.2 | 52 | 34.5 | 56 | 0.50 | 59 | 0 |
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| 1998 | 46.4 | 44 | 56.1 | 47 | 36.7 | 29 | 1.25 | 24 | 0 |
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| 1997 | 49 | 16 | 60.9 | 14 | 37 | 25 | 1.01 | 36 | 0 |
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| 1996 | 47.7 | 30 | 58.9 | 29 | 36.5 | 30 | 0.69 | 51 | 0 |
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| 1995 | 50.8 | 6 | 61.5 | 8 | 40.1 | 6 | 2.10 | 2 | 0 |
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| 1994 | 49.5 | 12 | 61.3 | 11 | 37.7 | 16 | 0.26 | 83 | 0 |
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| 1993 | 50.5 | 9 | 62 | 6 | 38.9 | 10 | 1.14 | 29 | 0 |
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| 1992 | 39.8 | 79 | 50.1 | 73 | 29.5 | 80 | 1.50 | 11 | 0 |
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| 1991 | 47 | 40 | 58 | 36 | 36 | 36 | 0.26 | 83 | 0 |
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| 1990 | 48.9 | 18 | 58.9 | 29 | 38.9 | 10 | 1.01 | 36 | 0 |
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| 1989 | 43.2 | 65 | 51.5 | 69 | 34.9 | 49 | 1.18 | 26 | 0 |
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| 1988 | 49.5 | 12 | 58.5 | 32 | 40.5 | 5 | 3.07 | 1 | 0 |
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| 1987 | 45.6 | 49 | 56.1 | 47 | 35.2 | 47 | 1.43 | 12 | 0 |
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| 1986 | 43.5 | 62 | 54 | 60 | 33.1 | 66 | 0.67 | 53 | 0 |
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| 1985 | 40.6 | 75 | 49.9 | 75 | 31.3 | 75 | 1.07 | 32 | 0 |
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| 1984 | 40.3 | 76 | 50.6 | 71 | 29.9 | 77 | 1.43 | 12 | 0 |
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| 1983 | 47.2 | 36 | 57.8 | 39 | 36.5 | 30 | 1.34 | 19 | 0 |
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| 1982 | 41.1 | 73 | 49.3 | 79 | 33 | 67 | 1.17 | 27 | 0 |
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| 1981 | 51.1 | 5 | 62.8 | 5 | 39.4 | 8 | 0.74 | 49 | 0 |
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| 1980 | 47.6 | 31 | 57.4 | 42 | 37.7 | 16 | 1.25 | 24 | 0 |
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| 1979 | 48.5 | 22 | 59.8 | 21 | 37.1 | 24 | 0.18 | 86 | 0 |
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| 1978 | 48.8 | 19 | 60.7 | 15 | 36.8 | 28 | 0.99 | 38 | 0 |
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| 1977 | 41.2 | 72 | 49.7 | 78 | 32.8 | 69 | 1.35 | 18 | 0 |
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| 1976 | 43.4 | 63 | 52.5 | 66 | 34.3 | 60 | 1.63 | 10 | 0 |
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| 1975 | 44.3 | 56 | 54.2 | 59 | 34.4 | 58 | 0.49 | 60 | 0 |
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| 1974 | 47.4 | 33 | 60.5 | 17 | 34.3 | 60 | 0.30 | 79 | 0 |
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| 1973 | 46.4 | 44 | 57.6 | 41 | 35.3 | 46 | 0.97 | 39 | 0 |
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| 1972 | 42.8 | 67 | 51.1 | 70 | 34.5 | 56 | 0.40 | 69 | 0 |
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| 1971 | 41.7 | 71 | 49.8 | 76 | 33.6 | 65 | 1.31 | 21 | 0 |
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| 1970 | 47.1 | 38 | 59.3 | 27 | 34.9 | 49 | 1.02 | 34 | 0 |
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| 1969 | 48.3 | 25 | 59.6 | 23 | 36.9 | 27 | 0.44 | 64 | 0 |
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| 1968 | 44.1 | 58 | 53.5 | 62 | 34.7 | 53 | 0.78 | 45 | 0 |
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| 1967 | 45 | 50 | 55.1 | 53 | 34.9 | 49 | 0.29 | 80 | 0 |
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| 1966 | 40 | 77 | 48.1 | 82 | 31.9 | 74 | 0.40 | 69 | 0 |
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| 1965 | 39.5 | 81 | 49 | 80 | 29.9 | 77 | 0.41 | 67 | 0 |
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| 1964 | 35.2 | 84 | 44.1 | 84 | 26.4 | 83 | 0.87 | 41 | 0 |
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| 1963 | 44.9 | 52 | 56 | 49 | 33.8 | 63 | 0.36 | 74 | 0 |
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| 1962 | 41 | 74 | 49.8 | 76 | 32.3 | 71 | 0.32 | 78 | 0 |
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| 1961 | 47.3 | 34 | 58.8 | 31 | 35.8 | 38 | 0.24 | 85 | 0 |
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| 1960 | 48 | 27 | 59.1 | 28 | 37 | 25 | 1.67 | 9 | 0 |
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| 1959 | 45.7 | 48 | 57.7 | 40 | 33.7 | 64 | 0.35 | 75 | 0 |
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| 1958 | 44.1 | 58 | 54.4 | 56 | 33.9 | 62 | 0.44 | 64 | 0 |
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| 1957 | 47.8 | 29 | 57.9 | 38 | 37.7 | 16 | 0.82 | 44 | 0 |
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| 1956 | 43.9 | 61 | 52.4 | 67 | 35.4 | 42 | 1.27 | 23 | 0 |
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| 1955 | 43.1 | 66 | 53.9 | 61 | 32.3 | 71 | 0.37 | 73 | 0 |
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| 1954 | 49.5 | 12 | 61.5 | 8 | 37.5 | 22 | 0.34 | 77 | 0 |
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| 1953 | 47.3 | 34 | 58.3 | 35 | 36.4 | 32 | 1.98 | 5 | 0 |
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| 1952 | 36.7 | 83 | 45.6 | 83 | 27.8 | 82 | 0.68 | 52 | 0 |
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| 1951 | 48.1 | 26 | 59.9 | 20 | 36.2 | 34 | 0.72 | 50 | 0 |
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| 1950 | 44 | 60 | 55 | 54 | 33 | 67 | 0.52 | 57 | 0 |
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| 1949 | 39.8 | 79 | 50 | 74 | 29.5 | 80 | 0.49 | 60 | 0 |
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| 1948 | 42.4 | 69 | 52.8 | 65 | 32 | 73 | 0.39 | 71 | 0 |
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| 1947 | 45 | 50 | 55.4 | 51 | 34.7 | 53 | 0.53 | 56 | 0 |
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| 1946 | 43.4 | 63 | 52 | 68 | 34.7 | 53 | 1.37 | 16 | 0 |
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| 1945 | 37.3 | 82 | 48.5 | 81 | 26.1 | 84 | 1.05 | 33 | 0 |
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| 1944 | 44.9 | 52 | 54.4 | 56 | 35.4 | 42 | 1.97 | 6 | 0 |
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| 1943 | 45.9 | 47 | 56.4 | 46 | 35.4 | 42 | 1.72 | 8 | 0 |
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| 1942 | 47.1 | 38 | 58.5 | 32 | 35.8 | 38 | 0.75 | 46 | 0 |
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| 1941 | | | | | | | 0.75 | 46 | 31 |
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| 1940 | | | | | | | 0.41 | 67 | 31 |
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| 1939 | | | | | | | 1.30 | 22 | 31 |
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