Every June in Georgetown, DE from 1945 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 | 74.2 | 12 | 85.7 | 9 | 62.7 | 24 | 2.81 | 50 | 0 |
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| 2025 | 75.7 | 4 | 85.2 | 11 | 66.3 | 2 | 1.87 | 68 | 0 |
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| 2024 | 75.1 | 7 | 86.4 | 6 | 63.8 | 17 | 2.75 | 51 | 0 |
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| 2023 | 72.1 | 46 | 82.5 | 53 | 61.7 | 39 | 3.21 | 40 | 0 |
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| 2022 | 73 | 30 | 84.2 | 24 | 61.8 | 38 | 3.05 | 43 | 0 |
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| 2021 | 76.1 | 2 | 86 | 8 | 66.1 | 3 | 3.39 | 39 | 0 |
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| 2020 | 74.9 | 8 | 84.9 | 15 | 64.9 | 9 | 2.07 | 61 | 0 |
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| 2019 | 74.7 | 9 | 84.1 | 28 | 65.3 | 5 | 4.48 | 22 | 0 |
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| 2018 | 73.2 | 22 | 82.1 | 57 | 64.3 | 13 | 4.42 | 23 | 0 |
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| 2017 | 74.6 | 10 | 85.3 | 10 | 63.9 | 16 | 1.81 | 69 | 0 |
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| 2016 | 72 | 48 | 81.8 | 60 | 62.1 | 31 | 2.99 | 45 | 0 |
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| 2015 | 73.9 | 17 | 82.6 | 51 | 65.2 | 6 | 4.83 | 18 | 0 |
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| 2014 | 73.2 | 22 | 83.8 | 31 | 62.5 | 26 | 1.77 | 70 | 0 |
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| 2013 | 74.4 | 11 | 83.5 | 38 | 65.2 | 6 | 12.24 | 2 | 0 |
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| 2012 | 73.3 | 21 | 84.6 | 20 | 62.1 | 31 | 1.72 | 71 | 0 |
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| 2011 | 72.9 | 32 | 83.6 | 35 | 62.1 | 31 | 1.88 | 67 | 0 |
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| 2010 | 78 | 1 | 88.6 | 1 | 67.4 | 1 | 2.69 | 52 | 0 |
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| 2009 | 72.8 | 35 | 81.2 | 65 | 64.4 | 11 | 5.58 | 11 | 0 |
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| 2008 | 76 | 3 | 87.1 | 2 | 64.8 | 10 | 3.54 | 36 | 0 |
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| 2007 | 72.4 | 38 | 82.6 | 51 | 62.1 | 31 | 3.51 | 37 | 0 |
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| 2006 | 72.7 | 36 | 81.6 | 61 | 63.7 | 18 | 14.04 | 1 | 0 |
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| 2005 | 72.5 | 37 | 81.6 | 61 | 63.3 | 19 | 4.34 | 24 | 0 |
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| 2004 | 72.4 | 38 | 81.9 | 59 | 62.8 | 23 | 1.54 | 72 | 0 |
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| 2003 | 70.8 | 65 | 79.5 | 75 | 62.1 | 31 | 4.79 | 19 | 0 |
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| 2002 | 72.9 | 32 | 83.6 | 35 | 62.2 | 29 | 1.91 | 64 | 0 |
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| 2001 | 73.8 | 18 | 83.3 | 43 | 64.3 | 13 | 6.11 | 8 | 0 |
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| 2000 | 73.1 | 26 | 82.1 | 57 | 64 | 15 | 6.40 | 6 | 0 |
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| 1999 | 71 | 61 | 80.6 | 71 | 61.4 | 43 | 2.06 | 62 | 0 |
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| 1998 | 71.5 | 55 | 80.8 | 69 | 62.1 | 31 | 5.01 | 16 | 0 |
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| 1996 | 72.9 | 32 | 83.1 | 47 | 62.7 | 24 | 5.73 | 10 | 0 |
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| 1995 | 70.9 | 64 | 80.9 | 68 | 61 | 48 | 2.61 | 56 | 0 |
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| 1994 | 74.2 | 12 | 85.2 | 11 | 63.1 | 21 | 3.72 | 32 | 0 |
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| 1993 | 71.4 | 57 | 82.2 | 54 | 60.5 | 53 | 4.08 | 28 | 0 |
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| 1992 | 66.9 | 79 | 78 | 78 | 55.9 | 79 | 2.97 | 47 | 0 |
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| 1991 | 72.3 | 42 | 83.2 | 45 | 61.4 | 43 | 3.88 | 30 | 0 |
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| 1990 | 71.4 | 57 | 83.7 | 34 | 59.1 | 63 | 0.51 | 78 | 0 |
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| 1989 | 75.2 | 6 | 84.3 | 23 | 66.1 | 3 | 5.96 | 9 | 0 |
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| 1988 | 71.4 | 57 | 83.8 | 31 | 59 | 64 | 0.42 | 79 | 0 |
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| 1987 | 73.5 | 20 | 84.5 | 21 | 62.5 | 26 | 1.89 | 66 | 0 |
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| 1986 | 73.2 | 22 | 85.2 | 11 | 61.2 | 45 | 3.58 | 35 | 0 |
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| 1985 | 70 | 70 | 80.3 | 73 | 59.8 | 58 | 2.99 | 45 | 0 |
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| 1984 | 72.1 | 46 | 83.2 | 45 | 61.1 | 46 | 1.44 | 73 | 0 |
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| 1983 | 71.3 | 60 | 82.2 | 54 | 60.4 | 54 | 6.49 | 5 | 0 |
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| 1982 | 69.1 | 73 | 78.8 | 76 | 59.4 | 61 | 4.09 | 26 | 0 |
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| 1981 | 73.1 | 26 | 84.1 | 28 | 62.1 | 31 | 2.62 | 55 | 0 |
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| 1980 | 69.7 | 71 | 81.4 | 63 | 58 | 72 | 2.67 | 53 | 0 |
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| 1979 | 67.7 | 77 | 78.3 | 77 | 57 | 77 | 6.25 | 7 | 0 |
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| 1978 | 71 | 61 | 82.9 | 48 | 59 | 64 | 2.09 | 60 | 0 |
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| 1977 | 68.8 | 75 | 79.9 | 74 | 57.6 | 73 | 2.28 | 58 | 0 |
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| 1976 | 73.2 | 22 | 84.2 | 24 | 62.2 | 29 | 1.27 | 74 | 0 |
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| 1975 | 71.6 | 54 | 81.4 | 63 | 61.7 | 39 | 3.70 | 33 | 0 |
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| 1974 | 67.6 | 78 | 77.6 | 79 | 57.5 | 74 | 2.91 | 49 | 0 |
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| 1973 | 74.2 | 12 | 83.3 | 43 | 65.1 | 8 | 2.33 | 57 | 0 |
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| 1972 | 67.8 | 76 | 77.1 | 80 | 58.4 | 69 | 9.24 | 3 | 0 |
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| 1971 | 71.7 | 52 | 81 | 67 | 62.4 | 28 | 2.63 | 54 | 0 |
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| 1970 | 71 | 61 | 81.2 | 65 | 60.9 | 50 | 5.48 | 12 | 0 |
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| 1969 | 74 | 16 | 84.9 | 15 | 63.2 | 20 | 1.95 | 63 | 1 |
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| 1968 | | | 84.4 | 22 | | | 3.74 | 31 | 4 |
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| 1967 | 70.2 | 68 | 83.5 | 38 | 57 | 77 | 5.16 | 15 | 3 |
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| 1966 | 71.5 | 55 | 84.2 | 24 | 58.9 | 66 | 5.29 | 14 | 1 |
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| 1965 | 70.7 | 66 | 82.9 | 48 | 58.5 | 68 | 2.93 | 48 | 0 |
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| 1964 | 73 | 30 | 86.5 | 5 | 59.4 | 61 | 0.55 | 77 | 0 |
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| 1963 | 71.9 | 49 | 84.9 | 15 | 58.8 | 67 | 3.96 | 29 | 0 |
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| 1962 | 72.4 | 38 | 83.6 | 35 | 61.1 | 46 | 4.09 | 26 | 0 |
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| 1961 | 71.7 | 52 | 83.5 | 38 | 59.9 | 56 | 3.69 | 34 | 0 |
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| 1960 | 72.2 | 45 | 84.8 | 18 | 59.7 | 59 | 3.05 | 43 | 1 |
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| 1959 | 73.1 | 26 | 86.3 | 7 | 59.9 | 56 | 1.90 | 65 | 0 |
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| 1958 | 69.4 | 72 | 80.8 | 69 | 58.1 | 71 | 5.00 | 17 | 0 |
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| 1957 | 75.6 | 5 | 86.8 | 4 | 64.4 | 11 | 3.40 | 38 | 0 |
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| 1956 | 72.3 | 42 | 83.9 | 30 | 60.6 | 52 | 4.76 | 20 | 0 |
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| 1955 | 68.9 | 74 | 80.4 | 72 | 57.4 | 76 | 4.75 | 21 | 1 |
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| 1954 | 72.3 | 42 | 85.1 | 14 | 59.5 | 60 | 0.94 | 75 | 0 |
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| 1953 | 72.4 | 38 | 83.8 | 31 | 61 | 48 | 3.17 | 41 | 0 |
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| 1952 | 74.2 | 12 | 86.9 | 3 | 61.6 | 41 | 3.10 | 42 | 0 |
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| 1951 | 71.8 | 50 | 83.4 | 41 | 60.1 | 55 | 5.32 | 13 | 0 |
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| 1950 | 70.5 | 67 | 83.4 | 41 | 57.5 | 74 | 4.27 | 25 | 0 |
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| 1949 | 73.1 | 26 | 84.7 | 19 | 61.6 | 41 | 0.60 | 76 | 0 |
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| 1948 | 71.8 | 50 | 82.8 | 50 | 60.7 | 51 | 7.29 | 4 | 0 |
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| 1947 | 70.2 | 68 | 82.2 | 54 | 58.2 | 70 | 2.21 | 59 | 0 |
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| 1945 | 73.6 | 19 | 84.2 | 24 | 63 | 22 | | | 0 |
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