| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 8°C | -11°C | -2°C |
| February | 15°C | -4°C | 5°C |
| March | 21°C | -4°C | 6°C |
| April | 23°C | -4°C | 9°C |
| May | 25°C | 3°C | 14°C |
| June | 31°C | 5°C | 18°C |
| July | 33°C | 0°C | 20°C |
| August | 33°C | 9°C | 21°C |
| September | 31°C | 8°C | 17°C |
| October | 22°C | 1°C | 11°C |
| November | 13°C | -9°C | 3°C |
| December | 9°C | -15°C | -1°C |
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