| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 2°C | -18°C | -7°C |
| February | 8°C | -12°C | 0°C |
| March | 21°C | -4°C | 4°C |
| April | 23°C | -1°C | 10°C |
| May | 25°C | -3°C | 13°C |
| June | 28°C | 9°C | 18°C |
| July | 31°C | 0°C | 19°C |
| August | 31°C | 10°C | 20°C |
| September | 29°C | 7°C | 18°C |
| October | 19°C | 1°C | 8°C |
| November | 12°C | -15°C | 1°C |
| December | 5°C | -16°C | -3°C |
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