| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 11°C | -12°C | 1°C |
| February | 14°C | -3°C | 6°C |
| March | 18°C | -2°C | 6°C |
| April | 26°C | -4°C | 8°C |
| May | 23°C | 4°C | 12°C |
| June | 30°C | 4°C | 15°C |
| July | 31°C | 7°C | 18°C |
| August | 31°C | 9°C | 19°C |
| September | 28°C | 0°C | 15°C |
| October | 23°C | 1°C | 13°C |
| November | 12°C | -8°C | 4°C |
| December | 9°C | -13°C | 2°C |
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