| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 6.2 | 7 | 11.8 | 18.4 | 23.2 | 26.1 | 29.4 | 30.8 | 26.2 | 20.6 | 14.7 | 8.9 |
| Average Low Temperature (°C) | -1.5 | -1.7 | 0.8 | 5.2 | 10.5 | 16.2 | 20.6 | 21.1 | 16.9 | 10 | 4.5 | 0.2 |
| Average Precipitation (mm) | 62.6 | 71.7 | 105.5 | 107 | 139.6 | 234.5 | 255.9 | 132.9 | 182.4 | 94.3 | 74.8 | 51.5 |
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