| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 5.5 | 5.6 | 9.4 | 15.4 | 20 | 23.4 | 27.3 | 29.4 | 25.3 | 20 | 14.4 | 8.9 |
| Average Low Temperature (°C) | -0.7 | -1.1 | 0.9 | 5.7 | 10.9 | 16.4 | 20.5 | 21.9 | 17.7 | 11 | 5.7 | 1.5 |
| Average Precipitation (mm) | 236 | 153.3 | 126 | 111.1 | 122.5 | 158.9 | 235.9 | 143.9 | 207.1 | 149.6 | 218.6 | 245.3 |
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