Weather Avenue > 
Weather Asia > Japan > 
Nagano > 
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| Month | Max. | Min. | Avg. |
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| January | 9°C | -13°C | -1°C |
| February | 15°C | -8°C | 1°C |
| March | 17°C | -12°C | 2°C |
| April | 27°C | -1°C | 13°C |
| May | 29°C | 0°C | 14°C |
| June | 30°C | 5°C | 19°C |
| July | 35°C | 14°C | 23°C |
| August | 34°C | 15°C | 24°C |
| September | 34°C | 9°C | 22°C |
| October | 23°C | 0°C | 11°C |
| November | 22°C | -5°C | 7°C |
| December | 17°C | -10°C | 2°C |
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