| Rank | Temperature | Date |
|---|---|---|
| 1 | 2.1 °C | February 1, 1963 |
| 2 | 2.5 °C | January 8, 1985 |
| 3 | 3.0 °C | March 6, 1971 |
| 4 | 3.2 °C | March 5, 1971 |
| 5 | 3.4 °C | February 11, 1956 |
| 6 | 3.8 °C | January 9, 1985 |
| 7 | 4.0 °C | January 22, 1963 |
| 8 | 4.2 °C | January 6, 1985 |
| 8 | 4.2 °C | January 23, 1963 |
| 10 | 4.3 °C | February 4, 2012 |
| 10 | 4.3 °C | February 14, 1956 |
| 12 | 4.4 °C | February 11, 1986 |
| 13 | 4.6 °C | January 31, 1963 |
| 14 | 4.8 °C | December 28, 1996 |
| 14 | 4.8 °C | January 8, 1981 |
| 14 | 4.8 °C | February 10, 1956 |
| 14 | 4.8 °C | January 7, 1954 |
| 18 | 4.9 °C | February 4, 1956 |
| 19 | 5.1 °C | February 3, 1956 |
| 20 | 5.2 °C | January 7, 1985 |
| 20 | 5.2 °C | February 13, 1956 |