| Year | Temperature |
|---|---|
| 2013 | 22 °F |
| 2012 | 21 °F |
| 2011 | 19 °F |
| 2004 | 23 °F |
| 2003 | 13 °F |
| 2002 | 21 °F |
| 2001 | 19 °F |
| 2000 | 16 °F |
| 1999 | 15 °F |
| 1998 | 26 °F |
| 1997 | 18 °F |
| 1996 | 10 °F |
| 1995 | 18 °F |
| 1994 | 16 °F |
| 1993 | 20 °F |
| 1992 | 23 °F |
| 1991 | 18 °F |
| 1989 | 7 °F |
| 1988 | 18 °F |
| 1987 | 20 °F |
| 1984 | 18 °F |
| 1983 | 6 °F |
| 1982 | 6 °F |
| 1980 | 17 °F |
| 1979 | 15 °F |
| 1978 | 18 °F |
| 1977 | 8 °F |
| 1973 | 19 °F |
| 1972 | 14 °F |
| 1971 | 14 °F |
| 1970 | 9 °F |
| 1969 | 20 °F |
| 1968 | 19 °F |
| 1967 | 18 °F |
| 1966 | 6 °F |
| 1965 | 18 °F |
| 1964 | 19 °F |
| 1963 | 8 °F |
| 1962 | 6 °F |
| 1961 | 15 °F |
| 1960 | 18 °F |
| 1959 | 20 °F |
| 1958 | 15 °F |
| 1957 | 18 °F |