Butte Climate: Weather by Month and Best Time to Visit
Best months for Butte: August, July, September.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -12°C | 22 mm | 7 | – | – | 4.2 |
| February | -1°C | -11°C | 24 mm | 7 | – | – | 4.1 |
| March | 4°C | -8°C | 36 mm | 9 | – | – | 4.3 |
| April | 8°C | -4°C | 55 mm | 12 | – | – | 4.8 |
| May | 14°C | 0°C | 77 mm | 15 | – | – | 5.7 |
| June | 19°C | 5°C | 84 mm | 14 | – | – | 6.8 |
| July | 25°C | 8°C | 38 mm | 9 | – | – | 7.9 |
| August | 25°C | 7°C | 29 mm | 7 | – | – | 8.2 |
| September | 19°C | 3°C | 34 mm | 7 | – | – | 7.8 |
| October | 10°C | -2°C | 34 mm | 8 | – | – | 5.9 |
| November | 2°C | -8°C | 31 mm | 7 | – | – | 4.3 |
| December | -3°C | -14°C | 26 mm | 7 | – | – | 4.1 |