Every 1 September to 10 October in Oswego, NY from 1926 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 | 63.4 | 17 | 70.4 | 28 | 56.4 | 9 | 2.45 | 90 | 0 |
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| 2025 | 63.5 | 15 | 71.9 | 11 | 55.2 | 17 | 2.29 | 94 | 0 |
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| 2024 | 64.9 | 8 | 72.3 | 9 | 57.5 | 6 | 6.05 | 23 | 0 |
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| 2023 | 64.6 | 9 | 71.5 | 18 | 57.7 | 3 | 6.44 | 18 | 0 |
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| 2022 | 61.7 | 32 | 68 | 67 | 55.3 | 16 | 7.12 | 10 | 0 |
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| 2021 | 65.3 | 6 | 71.8 | 17 | 58.8 | 2 | 4.10 | 64 | 0 |
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| 2020 | 62.2 | 25 | 69.8 | 35 | 54.6 | 21 | 2.88 | 85 | 0 |
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| 2019 | 61.3 | 42 | 69.6 | 39 | 53 | 46 | 4.95 | 45 | 0 |
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| 2018 | 65.2 | 7 | 72.7 | 8 | 57.6 | 5 | 5.40 | 36 | 0 |
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| 2017 | 63.8 | 12 | 72 | 10 | 55.5 | 14 | 6.65 | 15 | 0 |
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| 2016 | 63.5 | 15 | 71.9 | 11 | 55.2 | 17 | 5.33 | 38 | 0 |
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| 2015 | 62.9 | 20 | 70.3 | 29 | 55.5 | 14 | 5.97 | 25 | 0 |
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| 2014 | 61.3 | 42 | 69.7 | 36 | 52.8 | 49 | 2.32 | 93 | 0 |
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| 2013 | 61.4 | 40 | 70.1 | 32 | 52.7 | 52 | 6.37 | 20 | 0 |
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| 2012 | 61.7 | 32 | 69.6 | 39 | 53.8 | 31 | 8.34 | 4 | 0 |
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| 2011 | 62.9 | 20 | 70.8 | 22 | 55.2 | 17 | 6.83 | 12 | 1 |
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| 2010 | 61.8 | 31 | 68.9 | 55 | 54.7 | 20 | 9.56 | 1 | 0 |
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| 2009 | 58.5 | 87 | 66.3 | 85 | 50.6 | 87 | 5.18 | 40 | 0 |
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| 2008 | 60.1 | 64 | 68.2 | 63 | 52 | 66 | 4.97 | 44 | 0 |
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| 2007 | 65.6 | 3 | 74.4 | 4 | 56.7 | 8 | 3.48 | 76 | 0 |
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| 2006 | 59 | 81 | 66.4 | 84 | 51.6 | 71 | 5.27 | 39 | 0 |
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| 2005 | 64.5 | 10 | 73.1 | 6 | 56 | 13 | 5.41 | 35 | 0 |
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| 2004 | 62 | 27 | 70.3 | 29 | 53.7 | 33 | 3.93 | 70 | 0 |
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| 2003 | 60.2 | 63 | 68.8 | 56 | 51.6 | 71 | 4.44 | 57 | 0 |
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| 2002 | 65.4 | 4 | 74.8 | 1 | 56.1 | 12 | 4.10 | 64 | 0 |
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| 2001 | 61.1 | 46 | 69.7 | 36 | 52.5 | 54 | 4.34 | 60 | 0 |
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| 2000 | 59.8 | 70 | 68.2 | 63 | 51.2 | 81 | 6.38 | 19 | 1 |
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| 1999 | 63 | 19 | 71.9 | 11 | 54.2 | 27 | 6.58 | 17 | 0 |
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| 1998 | 61.7 | 32 | 70 | 34 | 53.6 | 35 | 3.63 | 74 | 1 |
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| 1997 | 60.7 | 54 | 69.3 | 46 | 52.3 | 58 | 6.62 | 16 | 1 |
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| 1996 | 61.1 | 46 | 68.6 | 59 | 53.3 | 38 | 5.35 | 37 | 1 |
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| 1995 | 59.6 | 73 | 68 | 67 | 51.3 | 78 | 6.34 | 21 | 0 |
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| 1994 | 59.7 | 71 | 67.5 | 75 | 51.9 | 67 | 3.91 | 71 | 0 |
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| 1993 | 58.1 | 93 | 66.2 | 87 | 50 | 93 | 5.85 | 28 | 0 |
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| 1992 | 59.7 | 71 | 69.2 | 52 | 50.2 | 91 | 4.10 | 64 | 0 |
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| 1991 | 61.1 | 46 | 70.9 | 21 | 51.4 | 77 | 7.28 | 9 | 0 |
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| 1990 | 61.3 | 42 | 69.7 | 36 | 52.8 | 49 | 4.57 | 55 | 0 |
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| 1989 | 59.6 | 73 | 68.4 | 61 | 50.8 | 85 | 3.96 | 68 | 0 |
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| 1988 | 59.4 | 77 | 68.3 | 62 | 50.5 | 88 | 4.70 | 50 | 0 |
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| 1987 | 59.4 | 77 | 66.9 | 78 | 52.1 | 65 | 6.71 | 14 | 1 |
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| 1986 | 58.7 | 84 | 66.1 | 89 | 51.3 | 78 | 8.67 | 2 | 0 |
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| 1985 | 62.6 | 22 | 71.4 | 19 | 53.7 | 33 | 4.08 | 67 | 0 |
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| 1984 | 58.2 | 89 | 66.7 | 81 | 49.7 | 94 | 4.13 | 63 | 0 |
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| 1983 | 63.6 | 13 | 72.8 | 7 | 54.5 | 24 | 4.80 | 48 | 0 |
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| 1982 | 61.1 | 46 | 70.3 | 29 | 51.8 | 68 | 5.06 | 43 | 0 |
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| 1981 | 57.2 | 97 | 63.4 | 100 | 51.1 | 82 | 7.76 | 8 | 0 |
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| 1980 | 60.5 | 57 | 69.4 | 42 | 51.6 | 71 | 4.18 | 62 | 0 |
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| 1979 | 59.9 | 69 | 68.5 | 60 | 51.3 | 78 | 8.34 | 4 | 0 |
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| 1978 | 58.1 | 93 | 66.9 | 78 | 49.3 | 95 | 5.94 | 26 | 0 |
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| 1977 | 59.3 | 79 | 65.1 | 98 | 53.6 | 35 | 8.46 | 3 | 0 |
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| 1976 | 58.2 | 89 | 67.1 | 76 | 49.3 | 95 | 6.03 | 24 | 1 |
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| 1975 | 57.8 | 95 | 65.2 | 96 | 50.3 | 90 | 7.82 | 6 | 0 |
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| 1974 | 57.1 | 98 | 65.2 | 96 | 49 | 98 | 4.20 | 61 | 0 |
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| 1973 | 60.8 | 53 | 69.3 | 46 | 52.4 | 56 | 4.48 | 56 | 0 |
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| 1972 | 60.5 | 57 | 69.4 | 42 | 51.7 | 70 | 4.70 | 50 | 0 |
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| 1971 | 64.2 | 11 | 71.9 | 11 | 56.4 | 9 | 3.06 | 83 | 0 |
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| 1970 | 62.6 | 22 | 70.7 | 24 | 54.6 | 21 | 5.78 | 29 | 0 |
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| 1969 | 61.7 | 32 | 70.8 | 22 | 52.6 | 53 | 2.66 | 88 | 0 |
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| 1968 | 63.6 | 13 | 71.1 | 20 | 56.2 | 11 | | | 0 |
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| 1967 | 61.4 | 40 | 69.3 | 46 | 53.5 | 37 | 5.87 | 27 | 0 |
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| 1966 | 59.1 | 80 | 65.8 | 92 | 52.3 | 58 | 4.66 | 52 | 0 |
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| 1965 | 60.1 | 64 | 67.9 | 71 | 52.2 | 61 | 7.05 | 11 | 0 |
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| 1964 | 59 | 81 | 67.7 | 74 | 50.2 | 91 | 1.77 | 97 | 0 |
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| 1963 | 56.3 | 99 | 66.6 | 83 | 45.9 | 101 | 1.92 | 95 | 0 |
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| 1962 | 59.5 | 75 | 66.2 | 87 | 53.1 | 43 | 5.55 | 33 | 2 |
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| 1961 | 67.5 | 1 | 74.6 | 2 | 59.8 | 1 | 2.80 | 86 | 2 |
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| 1960 | 61.9 | 30 | 69.3 | 46 | 54.2 | 27 | 1.75 | 98 | 2 |
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| 1959 | 66 | 2 | 74.5 | 3 | 57.7 | 3 | 5.57 | 32 | 4 |
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| 1958 | 60.3 | 62 | 68.8 | 56 | 52.2 | 61 | 5.76 | 30 | 4 |
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| 1957 | 61.5 | 38 | 69.3 | 46 | 53.2 | 41 | 4.66 | 52 | 2 |
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| 1956 | 57.6 | 96 | 66.3 | 85 | 49.1 | 97 | 4.93 | 46 | 2 |
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| 1955 | 62 | 27 | 71.9 | 11 | 52.2 | 61 | 5.11 | 42 | 4 |
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| 1954 | 60.1 | 64 | 67.1 | 76 | 53.1 | 43 | 3.20 | 80 | 0 |
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| 1953 | 60.5 | 57 | 69.6 | 39 | 51.5 | 74 | 3.35 | 78 | 0 |
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| 1952 | 60 | 68 | 68.2 | 63 | 51.8 | 68 | 6.75 | 13 | 0 |
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| 1951 | 60.1 | 64 | 68 | 67 | 52.2 | 61 | 4.35 | 59 | 0 |
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| 1950 | 58.6 | 85 | 65.8 | 92 | 51.5 | 74 | 6.23 | 22 | 0 |
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| 1949 | 60.4 | 60 | 67.8 | 72 | 53 | 46 | 3.75 | 73 | 0 |
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| 1948 | 61.1 | 46 | 69.1 | 53 | 53.2 | 41 | 1.65 | 99 | 0 |
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| 1947 | 62.2 | 25 | 70.6 | 26 | 53.8 | 31 | 2.35 | 91 | 0 |
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| 1946 | 61.5 | 38 | 70.6 | 26 | 52.4 | 56 | 4.44 | 57 | 0 |
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| 1945 | 60.6 | 55 | 68.1 | 66 | 53.1 | 43 | 7.81 | 7 | 0 |
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| 1944 | 60.4 | 60 | 67.8 | 72 | 53 | 46 | 3.63 | 74 | 0 |
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| 1943 | 58.3 | 88 | 66 | 90 | 50.7 | 86 | 2.35 | 91 | 0 |
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| 1942 | 60.6 | 55 | 68.7 | 58 | 52.5 | 54 | 3.90 | 72 | 0 |
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| 1941 | 63.2 | 18 | 71.9 | 11 | 54.5 | 24 | 2.73 | 87 | 0 |
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| 1940 | 58.6 | 85 | 65.7 | 94 | 51.5 | 74 | 2.57 | 89 | 0 |
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| 1939 | 61.7 | 32 | 70.7 | 24 | 52.8 | 49 | 3.32 | 79 | 0 |
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| 1938 | 55.7 | 101 | 62.9 | 101 | 48.4 | 100 | 4.93 | 46 | 0 |
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| 1937 | 59 | 81 | 66.9 | 78 | 51.1 | 82 | 1.59 | 100 | 0 |
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| 1936 | 61.1 | 46 | 69 | 54 | 53.3 | 38 | 5.12 | 41 | 0 |
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| 1935 | 56.3 | 99 | 64 | 99 | 48.6 | 99 | 3.36 | 77 | 0 |
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| 1934 | 62 | 27 | 69.3 | 46 | 54.6 | 21 | 3.04 | 84 | 0 |
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| 1933 | 61.1 | 46 | 68 | 67 | 54.2 | 27 | 1.85 | 96 | 0 |
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| 1932 | 62.3 | 24 | 70.1 | 32 | 54.5 | 24 | 5.47 | 34 | 0 |
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| 1931 | 65.4 | 4 | 73.7 | 5 | 57 | 7 | 3.08 | 81 | 0 |
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| 1930 | 61.3 | 42 | 69.4 | 42 | 53.3 | 38 | 3.95 | 69 | 0 |
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| 1929 | 59.5 | 75 | 66.7 | 81 | 52.3 | 58 | 5.60 | 31 | 0 |
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| 1928 | 58.2 | 89 | 65.9 | 91 | 50.4 | 89 | 3.07 | 82 | 0 |
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| 1927 | 61.7 | 32 | 69.4 | 42 | 53.9 | 30 | 4.63 | 54 | 0 |
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| 1926 | 58.2 | 89 | 65.3 | 95 | 51 | 84 | 4.77 | 49 | 0 |
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