| Month | Avg max | Avg min | Average | High | Date | Low | Date |
|---|---|---|---|---|---|---|---|
| Jan | 8.4 | 2.3 | 5.4 | 12.1 | 01 | -4.4 | 17 |
| Feb | 7.1 | 0.7 | 3.9 | 15.1 | 29 | -8.9 | 11 |
| Mar | 15.1 | 4.0 | 8.6 | 24.0 | 28 | -0.8 | 06 |
| Apr | 13.1 | 3.7 | 7.5 | 18.1 | 30 | -1.7 | 16 |
| May | 19.3 | 8.3 | 13.0 | 29.9 | 28 | 2.4 | 07 |
| Jun | 19.6 | 10.0 | 14.0 | 26.6 | 20 | 5.4 | 13 |
| Jul | 22.2 | 11.8 | 16.2 | 31.8 | 24 | 8.9 | 12 |
| Aug | 22.6 | 12.8 | 16.7 | 29.0 | 10 | 7.5 | 31 |
| Sep | 19.1 | 9.0 | 13.2 | 26.8 | 07 | 4.6 | 22 |
| Oct | 13.0 | 6.6 | 9.5 | 17.4 | 01 | 0.1 | 27 |
| Nov | 8.9 | 3.4 | 6.3 | 13.8 | 13 | -2.5 | 29 |
| Dec | 7.2 | 2.3 | 4.9 | 12.4 | 22 | -5.2 | 12 |
| 2012 | 14.7 | 6.3 | 10.0 | 31.8 | Jul | -8.9 | Feb |