| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 8.2 | 8.2 | 10.5 | 15.4 | 18.9 | 21.5 | 24.8 | 27.3 | 24.7 | 20.3 | 15.5 | 10.9 |
| Average Low Temperature (°C) | -0.9 | -0.6 | 1.9 | 6.8 | 11.4 | 15.6 | 19.3 | 21.3 | 18.3 | 12 | 6 | 1.3 |
| Average Precipitation (mm) | 46.2 | 61.9 | 106.1 | 128.3 | 147 | 149.8 | 120.5 | 141.7 | 205.8 | 153.1 | 87.7 | 35 |
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