| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 9.3 | 9.8 | 13.1 | 19 | 23.6 | 26 | 29.6 | 31.5 | 26.6 | 21.3 | 16.2 | 11.7 |
| Average Low Temperature (°C) | -1.1 | -0.4 | 2.6 | 8.1 | 12.9 | 17.6 | 21.3 | 22.7 | 18.9 | 12.5 | 6.3 | 1.1 |
| Average Precipitation (mm) | 26.1 | 40.2 | 65.9 | 95.8 | 105.7 | 155.2 | 155.9 | 189.2 | 208.7 | 123.5 | 58.3 | 20.1 |
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