| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 3.8 | 3.9 | 7.9 | 15.6 | 20.8 | 24.3 | 27.7 | 29.8 | 25.1 | 19.3 | 13.2 | 7.2 |
| Average Low Temperature (°C) | -1 | -1.2 | 0.8 | 5.9 | 11.6 | 16.6 | 20.6 | 22.1 | 17.8 | 11.5 | 5.8 | 1.6 |
| Average Precipitation (mm) | 297.9 | 168.8 | 140.7 | 99.5 | 114.2 | 125.5 | 225.3 | 148.6 | 175.8 | 195.3 | 281 | 335.8 |
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