| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 5.6 | 5.6 | 9.7 | 15.9 | 20.6 | 24 | 27.7 | 29.5 | 25.6 | 20.1 | 14.3 | 8.7 |
| Average Low Temperature (°C) | -0.4 | -0.7 | 2 | 6.7 | 12.2 | 17.1 | 21.1 | 22.2 | 18.4 | 11.9 | 6.3 | 1.7 |
| Average Precipitation (mm) | 158.8 | 135.9 | 128.9 | 127.2 | 169.9 | 215.8 | 190.6 | 110 | 191.3 | 112 | 106 | 131.2 |
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