| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 7°C | -15°C | -2°C |
| February | 15°C | -9°C | 3°C |
| March | 16°C | -10°C | 4°C |
| April | 26°C | -11°C | 7°C |
| May | 22°C | -1°C | 10°C |
| June | 31°C | 0°C | 15°C |
| July | 30°C | 7°C | 19°C |
| August | 31°C | 6°C | 19°C |
| September | 27°C | -5°C | 13°C |
| October | 21°C | -2°C | 10°C |
| November | 10°C | -7°C | 1°C |
| December | 10°C | -13°C | -1°C |
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