| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average High Temperature (°C) | 5.3 | 5.7 | 9.2 | 15.4 | 19.7 | 22.1 | 26 | 27.1 | 22.7 | 17.6 | 13.3 | 8.3 |
| Average Low Temperature (°C) | -6.7 | -5.8 | -2.1 | 3.1 | 7.9 | 13 | 16.9 | 17.6 | 14.1 | 7.4 | 1.3 | -4.1 |
| Average Precipitation (mm) | 47.6 | 59 | 92.2 | 109.7 | 108.8 | 169.3 | 177.2 | 241.9 | 256 | 152.8 | 82.1 | 33.7 |
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