| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 7.9 | 8.2 | 11.8 | 17.7 | 22.1 | 25.1 | 28.9 | 30.5 | 26.5 | 21.2 | 15.9 | 10.8 |
| Average Low Temperature (°C) | 0.2 | 0.3 | 3.1 | 8.1 | 12.7 | 17.5 | 21.5 | 22.6 | 18.9 | 12.5 | 7 | 2.2 |
| Average Precipitation (mm) | 49.2 | 69.5 | 135.7 | 159.7 | 219.8 | 289 | 245.7 | 185.8 | 271.1 | 135.9 | 80.3 | 37.9 |
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