| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 4°C | -20°C | -8°C |
| February | 9°C | -18°C | -5°C |
| March | 10°C | -10°C | -2°C |
| April | 13°C | -7°C | 3°C |
| May | 19°C | -2°C | 7°C |
| June | 29°C | 5°C | 14°C |
| July | 34°C | 8°C | 20°C |
| August | 31°C | 6°C | 18°C |
| September | 27°C | 2°C | 15°C |
| October | 22°C | -2°C | 10°C |
| November | 12°C | -6°C | 1°C |
| December | 12°C | -10°C | 0°C |
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