| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 7.1 | 7.6 | 11.6 | 18.4 | 23.1 | 26.1 | 29.7 | 31.4 | 26.5 | 20.9 | 15.4 | 10 |
| Average Low Temperature (°C) | -0.4 | -0.3 | 1.9 | 6.6 | 11.8 | 17.3 | 21.6 | 22.5 | 18.3 | 11.6 | 6.2 | 1.5 |
| Average Precipitation (mm) | 85.5 | 101.4 | 117.7 | 113 | 157 | 188.7 | 187.5 | 129.6 | 200.9 | 112 | 84.5 | 62.7 |
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