| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 4.1 | 4.3 | 7.9 | 14.4 | 19.3 | 23.2 | 27 | 29.1 | 24.7 | 19.1 | 12.9 | 7.5 |
| Average Low Temperature (°C) | -1.3 | -1.6 | 0.5 | 5.1 | 10.6 | 15.8 | 19.7 | 21 | 16.5 | 10.3 | 5 | 1.3 |
| Average Precipitation (mm) | 152.6 | 115.3 | 103.5 | 105.5 | 116.8 | 128.1 | 186.1 | 175.8 | 185.4 | 173.7 | 223.9 | 201.9 |
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