| Year | Temperature (°F) | to Normal (°F) |
|---|---|---|
| 2023 | 62.1 | 2.2 |
| 2022 | 58.1 | -1.7 |
| 2021 | 60.8 | 1.0 |
| 2020 | 62.2 | 2.3 |
| 2019 | 60.6 | 0.7 |
| 2018 | 56.9 | -2.9 |
| 2017 | 64.2 | 4.4 |
| 2016 | 58.9 | -0.9 |
| 2015 | 59.9 | 0.0 |
| 2014 | 55.6 | -4.3 |
| 2013 | 65.2 | 5.4 |
| 2012 | 59.8 | -0.1 |
| 2011 | 57.5 | -2.4 |
| 2010 | 54.2 | -5.6 |
| 2009 | 57.9 | -2.0 |
| 2008 | 59.6 | -0.2 |
| 2006 | 60.9 | 1.1 |
| 2005 | 61.9 | 2.1 |
| 2004 | 58.7 | -1.2 |
| 2002 | 61.3 | 1.5 |
| 2001 | 54.7 | -5.1 |
| 2000 | 60.0 | 0.2 |
| 1998 | 62.5 | 2.6 |
| 1994 | 57.9 | -2.0 |
| 1993 | 64.0 | 4.2 |
| 1992 | 56.8 | -3.1 |
| 1991 | 63.6 | 3.8 |
| 1990 | 63.9 | 4.0 |
| 1989 | 66.2 | 6.3 |
| 1988 | 54.7 | -5.1 |
| 1986 | 57.6 | -2.2 |
| 1985 | 53.5 | -6.4 |
| 1984 | 56.7 | -3.2 |
| 1983 | 55.8 | -4.1 |
| 1982 | 57.2 | -2.6 |
| 1981 | 50.2 | -9.6 |
| 1980 | 57.6 | -2.2 |
| 1979 | 56.6 | -3.3 |
| 1978 | 53.7 | -6.1 |
| 1977 | 50.3 | -9.6 |
| 1976 | 55.5 | -4.3 |
| 1975 | 63.8 | 3.9 |
| 1974 | 70.3 | 10.5 |
| 1973 | 61.1 | 1.3 |
| 1972 | 67.7 | 7.9 |
| 1971 | 61.3 | 1.5 |
| 1970 | 55.5 | -4.3 |
| 1969 | 59.9 | 0.1 |
| 1968 | 59.1 | -0.7 |
| 1967 | 62.8 | 3.0 |
| 1966 | 58.5 | -1.3 |
| 1965 | 60.7 | 0.9 |
| 1964 | 58.7 | -1.2 |
| 1963 | 59.0 | -0.9 |
| 1962 | 60.7 | 0.9 |
| 1961 | 57.1 | -2.8 |
| 1960 | 60.7 | 0.9 |
| 1959 | 58.0 | -1.8 |
| 1958 | 52.8 | -7.0 |
| 1957 | 65.6 | 5.8 |
| 1956 | 55.2 | -4.6 |
| 1955 | 57.6 | -2.3 |
| 1953 | 59.6 | -0.3 |
| 1952 | 62.6 | 2.8 |
| 1951 | 59.0 | -0.9 |
| 1950 | 67.1 | 7.3 |
| 1949 | 64.1 | 4.3 |