| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 0.9 | 1.8 | 5.9 | 14 | 19.8 | 24 | 27.1 | 29.3 | 24.2 | 17.8 | 10.4 | 3.9 |
| Average Low Temperature (°C) | -5 | -4.8 | -2.4 | 3.1 | 8.7 | 14.5 | 18.5 | 19.6 | 14.8 | 7.6 | 2 | -1.8 |
| Average Precipitation (mm) | 164.2 | 131.7 | 120.5 | 141.6 | 156.2 | 165.7 | 234.4 | 231.3 | 186.1 | 165.1 | 194 | 192.5 |
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