| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 3.7 | 4.2 | 7.5 | 13.3 | 18.2 | 20.8 | 24.2 | 26.5 | 23 | 18.1 | 12.3 | 6.9 |
| Average Low Temperature (°C) | -3.4 | -3.2 | -1 | 3.8 | 8.7 | 13.5 | 17.6 | 19.7 | 15.7 | 9.2 | 3.3 | -0.6 |
| Average Precipitation (mm) | 32.3 | 52.8 | 85.3 | 131.1 | 118.5 | 149.3 | 166.5 | 193.4 | 208.4 | 123.6 | 79.8 | 29.6 |
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