| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 8°C | -19°C | -2°C |
| February | 18°C | -10°C | 5°C |
| March | 23°C | -2°C | 9°C |
| April | 27°C | 1°C | 13°C |
| May | 30°C | 11°C | 20°C |
| June | 33°C | 10°C | 23°C |
| July | 34°C | 13°C | 23°C |
| August | 37°C | 11°C | 24°C |
| September | 33°C | 8°C | 22°C |
| October | 32°C | -4°C | 15°C |
| November | 28°C | -8°C | 7°C |
| December | 15°C | -5°C | 5°C |
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