| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 5°C | -14°C | -5°C |
| February | 10°C | -20°C | -5°C |
| March | 10°C | -15°C | 1°C |
| April | 13°C | -4°C | 3°C |
| May | 22°C | 1°C | 9°C |
| June | 29°C | 5°C | 15°C |
| July | 28°C | 12°C | 20°C |
| August | 27°C | 9°C | 19°C |
| September | 28°C | 7°C | 17°C |
| October | 23°C | 0°C | 12°C |
| November | 13°C | -6°C | 3°C |
| December | 13°C | -6°C | 2°C |
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