| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 4.9 | 5.6 | 10 | 17.5 | 22.6 | 25.5 | 29 | 30.5 | 25 | 19 | 13.3 | 7.9 |
| Average Low Temperature (°C) | -5.5 | -5.3 | -2 | 3.9 | 9.4 | 14.8 | 18.9 | 19.8 | 15.3 | 7.9 | 1.7 | -3.1 |
| Average Precipitation (mm) | 31.1 | 42.5 | 73.5 | 86.8 | 92.5 | 135.9 | 132.6 | 95.8 | 162.3 | 89.4 | 52.9 | 23.3 |
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