| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 5.2 | 5.4 | 9.5 | 16.8 | 21.8 | 24.9 | 28.4 | 30.4 | 25.6 | 20 | 14.5 | 8.9 |
| Average Low Temperature (°C) | -1 | -1.4 | 0.9 | 5.9 | 11 | 16.4 | 20.3 | 21.6 | 17.5 | 11.1 | 5.7 | 1.5 |
| Average Precipitation (mm) | 304.7 | 211.4 | 164.9 | 127.4 | 129.5 | 187.9 | 242.9 | 180.9 | 265.1 | 181.8 | 233.3 | 258.9 |
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