Gillette Climate: Weather by Month and Best Time to Visit
Best months for Gillette: September, August.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -8°C | 16 mm | 5 | – | – | 4.5 |
| February | 4°C | -7°C | 20 mm | 6 | – | – | 4.7 |
| March | 10°C | -3°C | 36 mm | 8 | – | – | 5.8 |
| April | 14°C | 1°C | 62 mm | 11 | – | – | 6.2 |
| May | 19°C | 6°C | 78 mm | 11 | – | – | 7.1 |
| June | 25°C | 11°C | 60 mm | 10 | – | – | 7.7 |
| July | 31°C | 15°C | 35 mm | 8 | – | – | 7.5 |
| August | 30°C | 15°C | 30 mm | 6 | – | – | 8.0 |
| September | 24°C | 9°C | 36 mm | 6 | – | – | 8.3 |
| October | 15°C | 3°C | 47 mm | 8 | – | – | 6.9 |
| November | 7°C | -3°C | 20 mm | 5 | – | – | 5.7 |
| December | 2°C | -7°C | 18 mm | 5 | – | – | 4.6 |