| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 8°C | -20°C | -4°C |
| February | 10°C | -11°C | 1°C |
| March | 11°C | -10°C | 1°C |
| April | 20°C | -9°C | 3°C |
| May | 17°C | 0°C | 7°C |
| June | 26°C | 1°C | 12°C |
| July | 28°C | 0°C | 15°C |
| August | 27°C | 2°C | 16°C |
| September | 24°C | -3°C | 11°C |
| October | 22°C | -4°C | 8°C |
| November | 6°C | -17°C | -3°C |
| December | 6°C | -21°C | -3°C |
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