| Year | Temperature |
|---|---|
| 2024 | 32 °F |
| 2023 | 35 °F |
| 2022 | 33 °F |
| 2021 | 34 °F |
| 2020 | 34 °F |
| 2019 | 29 °F |
| 2018 | 38 °F |
| 2017 | 37 °F |
| 2016 | 35 °F |
| 2015 | 31 °F |
| 2014 | 35 °F |
| 2013 | 29 °F |
| 2012 | 36 °F |
| 2011 | 28 °F |
| 2010 | 36 °F |
| 2009 | 36 °F |
| 2008 | 35 °F |
| 2007 | 29 °F |
| 1999 | 37 °F |
| 1997 | 33 °F |
| 1996 | 33 °F |
| 1995 | 37 °F |
| 1994 | 34 °F |
| 1993 | 31 °F |
| 1992 | 32 °F |
| 1991 | 31 °F |
| 1990 | 25 °F |
| 1988 | 31 °F |
| 1986 | 35 °F |
| 1981 | 37 °F |
| 1980 | 37 °F |
| 1979 | 31 °F |
| 1978 | 31 °F |