Every summer 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 | 77 | 7 | 86.8 | 17 | 67.2 | 12 | 13.36 | 32 | 0 |
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| 2025 | 75.8 | 23 | 84.9 | 47 | 66.7 | 16 | 13.55 | 28 | 0 |
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| 2024 | 76.8 | 11 | 86.9 | 15 | 66.8 | 15 | 13.72 | 27 | 0 |
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| 2023 | 75.6 | 25 | 85.1 | 43 | 66.1 | 18 | 11.66 | 46 | 0 |
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| 2022 | 77.5 | 6 | 87.7 | 4 | 67.3 | 10 | 8.80 | 63 | 0 |
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| 2021 | 77.8 | 3 | 86.8 | 17 | 68.7 | 2 | 15.51 | 18 | 0 |
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| 2020 | 78.6 | 1 | 87.7 | 4 | 69.4 | 1 | 12.25 | 42 | 0 |
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| 2019 | 77.6 | 4 | 87.3 | 8 | 67.9 | 5 | 10.59 | 55 | 0 |
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| 2018 | 76.7 | 12 | 85.8 | 31 | 67.6 | 7 | 12.51 | 41 | 0 |
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| 2017 | 76.4 | 14 | 85.9 | 30 | 67 | 13 | 17.83 | 12 | 0 |
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| 2016 | 77 | 7 | 86.6 | 20 | 67.3 | 10 | 11.13 | 50 | 0 |
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| 2015 | 75.3 | 29 | 84.7 | 52 | 66 | 20 | 10.46 | 56 | 0 |
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| 2014 | 74 | 57 | 83.9 | 64 | 64 | 42 | 13.11 | 36 | 0 |
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| 2013 | 76 | 18 | 84.5 | 58 | 67.5 | 8 | 27.15 | 1 | 0 |
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| 2012 | 77.6 | 4 | 87.4 | 7 | 67.8 | 6 | 11.31 | 49 | 0 |
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| 2011 | 76.9 | 10 | 87.5 | 6 | 66.2 | 17 | 13.32 | 33 | 0 |
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| 2010 | 78.6 | 1 | 88.8 | 1 | 68.5 | 3 | 7.49 | 72 | 0 |
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| 2009 | 77 | 7 | 85.8 | 31 | 68.2 | 4 | 16.64 | 15 | 0 |
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| 2008 | 76.2 | 16 | 86.9 | 15 | 65.4 | 26 | 8.49 | 66 | 0 |
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| 2007 | 75.2 | 32 | 85.4 | 39 | 64.9 | 28 | 11.12 | 51 | 0 |
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| 2006 | 76.2 | 16 | 85.6 | 35 | 66.9 | 14 | 18.28 | 10 | 0 |
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| 2005 | 76.3 | 15 | 85.2 | 41 | 67.5 | 8 | 12.59 | 40 | 0 |
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| 2004 | 74.8 | 38 | 83.7 | 67 | 65.8 | 22 | 13.02 | 37 | 0 |
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| 2003 | 74.5 | 43 | 82.9 | 74 | 66.1 | 18 | 15.50 | 19 | 0 |
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| 2002 | 76.6 | 13 | 87.2 | 10 | 65.9 | 21 | 7.59 | 71 | 0 |
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| 2001 | 74.1 | 55 | 83.5 | 72 | 64.7 | 34 | 22.02 | 4 | 0 |
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| 2000 | 73.1 | 71 | 81.7 | 79 | 64.6 | 36 | 17.90 | 11 | 0 |
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| 1999 | 75.4 | 28 | 85 | 46 | 65.8 | 22 | 6.94 | 75 | 0 |
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| 1998 | 74.5 | 43 | 84.4 | 60 | 64.6 | 36 | 8.79 | 64 | 0 |
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| 1996 | 73.3 | 70 | 83.6 | 69 | 62.9 | 57 | 18.78 | 8 | 0 |
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| 1995 | 74.9 | 35 | 85.6 | 35 | 64.2 | 39 | 7.87 | 70 | 0 |
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| 1994 | 74.2 | 51 | 86.1 | 28 | 62.4 | 66 | 13.48 | 30 | 0 |
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| 1993 | 75.5 | 27 | 86.2 | 27 | 64.8 | 31 | 8.75 | 65 | 0 |
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| 1992 | 71.5 | 80 | 82.5 | 77 | 60.5 | 80 | 13.24 | 35 | 0 |
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| 1991 | 75 | 34 | 85.2 | 41 | 64.8 | 31 | 14.27 | 25 | 0 |
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| 1990 | 74.2 | 51 | 84.9 | 47 | 63.4 | 50 | 11.48 | 47 | 0 |
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| 1989 | 74.9 | 35 | 84 | 63 | 65.8 | 22 | 25.99 | 2 | 0 |
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| 1988 | 75.8 | 23 | 86.7 | 19 | 64.9 | 28 | 8.01 | 68 | 0 |
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| 1987 | 75.9 | 21 | 87.1 | 11 | 64.7 | 34 | 6.33 | 77 | 0 |
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| 1986 | 74.7 | 39 | 85.6 | 35 | 63.7 | 45 | 12.03 | 45 | 0 |
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| 1985 | 73.7 | 63 | 83.6 | 69 | 63.7 | 45 | 16.53 | 16 | 0 |
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| 1984 | 73.6 | 66 | 83.9 | 64 | 63.4 | 50 | 9.05 | 62 | 0 |
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| 1983 | 74.2 | 51 | 85.8 | 31 | 62.6 | 62 | 15.46 | 20 | 0 |
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| 1982 | 71.9 | 78 | 82.6 | 76 | 61.2 | 79 | 12.78 | 39 | 0 |
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| 1981 | 73.6 | 66 | 84.8 | 50 | 62.4 | 66 | 9.06 | 61 | 0 |
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| 1980 | 74.9 | 35 | 86.3 | 24 | 63.5 | 49 | 6.94 | 75 | 0 |
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| 1979 | 72.2 | 77 | 81.9 | 78 | 62.4 | 66 | 14.55 | 22 | 1 |
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| 1978 | 74 | 57 | 84.5 | 58 | 63.6 | 47 | 14.83 | 21 | 0 |
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| 1977 | 74.1 | 55 | 85.6 | 35 | 62.6 | 62 | 7.01 | 74 | 0 |
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| 1976 | 73.6 | 66 | 84.7 | 52 | 62.5 | 65 | 10.03 | 59 | 2 |
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| 1975 | 73.9 | 60 | 84.1 | 62 | 63.8 | 44 | 16.15 | 17 | 0 |
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| 1974 | 72.5 | 76 | 82.9 | 74 | 62.2 | 70 | 11.07 | 53 | 0 |
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| 1973 | 75.1 | 33 | 85.1 | 43 | 65.1 | 27 | 13.48 | 30 | 0 |
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| 1972 | 71.8 | 79 | 81.6 | 80 | 62 | 73 | 14.13 | 26 | 0 |
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| 1971 | 73 | 73 | 83.1 | 73 | 63 | 56 | 13.30 | 34 | 0 |
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| 1970 | 73.7 | 63 | 83.8 | 66 | 63.6 | 47 | 11.45 | 48 | 0 |
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| 1969 | 74.4 | 47 | 84.3 | 61 | 64.5 | 38 | 20.59 | 7 | 1 |
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| 1968 | 75.3 | 29 | 87.3 | 8 | 63.3 | 54 | 7.40 | 73 | 6 |
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| 1967 | 73 | 73 | 83.6 | 69 | 62.4 | 66 | 25.18 | 3 | 4 |
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| 1966 | 74.7 | 39 | 87.1 | 11 | 62.2 | 70 | 7.95 | 69 | 4 |
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| 1965 | 73.4 | 69 | 84.8 | 50 | 62 | 73 | 17.48 | 14 | 0 |
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| 1964 | 74.3 | 48 | 86.4 | 23 | 62.2 | 70 | 6.24 | 78 | 2 |
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| 1963 | 73.9 | 60 | 86.3 | 24 | 61.5 | 77 | 8.31 | 67 | 1 |
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| 1962 | 73.1 | 71 | 84.6 | 55 | 61.6 | 76 | 10.28 | 57 | 4 |
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| 1961 | 74.6 | 41 | 85.3 | 40 | 63.9 | 43 | 12.86 | 38 | 0 |
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| 1960 | 74.5 | 43 | 85.8 | 31 | 63.3 | 54 | 12.20 | 44 | 1 |
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| 1959 | 76 | 18 | 87.1 | 11 | 64.9 | 28 | 18.58 | 9 | 0 |
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| 1958 | 74.5 | 43 | 84.9 | 47 | 64.2 | 39 | 21.54 | 5 | 0 |
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| 1957 | 75.3 | 29 | 87.9 | 2 | 62.8 | 59 | 6.07 | 79 | 2 |
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| 1956 | 74.2 | 51 | 85.1 | 43 | 63.4 | 50 | 12.25 | 42 | 0 |
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| 1955 | 76 | 18 | 86.3 | 24 | 65.7 | 25 | 17.65 | 13 | 1 |
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| 1954 | 74.3 | 48 | 86.6 | 20 | 61.9 | 75 | 10.23 | 58 | 0 |
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| 1953 | 74.6 | 41 | 86.5 | 22 | 62.8 | 59 | 14.55 | 22 | 1 |
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| 1952 | 75.6 | 25 | 87.9 | 2 | 63.4 | 50 | 14.28 | 24 | 0 |
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| 1951 | 74.3 | 48 | 86 | 29 | 62.6 | 62 | 13.52 | 29 | 0 |
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| 1950 | 73 | 73 | 84.6 | 55 | 61.4 | 78 | 11.10 | 52 | 0 |
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| 1949 | 75.9 | 21 | 87 | 14 | 64.8 | 31 | 9.60 | 60 | 0 |
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| 1948 | 73.8 | 62 | 84.7 | 52 | 62.9 | 57 | 20.74 | 6 | 0 |
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| 1947 | 73.7 | 63 | 84.6 | 55 | 62.8 | 59 | 10.83 | 54 | 0 |
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| 1945 | 74 | 57 | 83.7 | 67 | 64.2 | 39 | | | 3 |
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