| Month | Avg max | Avg min | Average | High | Date | Low | Date |
|---|---|---|---|---|---|---|---|
| Jan | 6.1 | 0.2 | 3.0 | 10.6 | 07 | -4.1 | 05 |
| Feb | 8.0 | 2.7 | 5.2 | 11.9 | 17 | -1.5 | 10 |
| Mar | 12.3 | 4.4 | 7.9 | 21.3 | 30 | -0.0 | 22 |
| Apr | 18.6 | 3.6 | 9.6 | 24.9 | 08 | -1.3 | 25 |
| May | 22.8 | 7.9 | 14.0 | 33.3 | 25 | 0.5 | 10 |
| Jun | 25.7 | 11.1 | 17.1 | 37.8 | 18 | 6.9 | 04 |
| Jul | 25.9 | 12.5 | 17.7 | 36.5 | 05 | 7.3 | 22 |
| Aug | 23.4 | 10.9 | 15.8 | 31.3 | 27 | 7.2 | 14 |
| Sep | 18.8 | 9.0 | 13.0 | 24.7 | 02 | 3.7 | 22 |
| Oct | 15.3 | 8.3 | 11.6 | 19.0 | 13 | 1.7 | 30 |
| Nov | 9.5 | 2.8 | 6.3 | 13.5 | 09 | -1.9 | 13 |
| Dec | 6.8 | 1.7 | 4.5 | 11.6 | 07 | -4.4 | 12 |
| 2017 | 16.2 | 6.3 | 10.6 | 37.8 | Jun | -4.4 | Dec |