Average temperature in September is 9.9 °C
Average daytime temperature is 15.4 °C
Average night temperature is 5.4 °C
Absolute maximum temperature: 21.2 °C
Absolute minimum temperature: -0.6 °C
Number of sunny days: 16
Number of rainy days: 14
Number of snow days:
Precipitation sum: 70 mm
* Weather data for Big Sky United States is based on climate observations for 2023 year
| Settembre (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 21.2 | 20.3 | 19.3 | 12.2 | 14.2 | 16.6 | 16.7 | 16.2 | 15.7 | 15.8 | 17.3 | 18 | 16.1 | 13.4 | 15.9 | 18 | 18.4 | 17.6 | 15.8 | 14.7 | 10.4 | 5.6 | 11.3 | 13.9 | 17.4 | 17.2 | 15.5 | 12.3 | 12 | 13.3 |
| Apparent max temperature | 17.7 | 16.8 | 16.1 | 11 | 10.4 | 13.2 | 14.3 | 14 | 13.6 | 14.3 | 14.4 | 15.1 | 13 | 10.9 | 12.9 | 15.5 | 14.9 | 13.5 | 11.7 | 9.7 | 6.6 | 2.9 | 8.3 | 10.2 | 13.3 | 12.1 | 10.2 | 8.1 | 7.6 | 10.9 |
| Mean temperature | 13.7 | 15.7 | 15.8 | 8.6 | 8.4 | 10.5 | 12 | 12 | 10.3 | 9.6 | 10.7 | 13 | 11.1 | 8.1 | 8.8 | 12.5 | 12.4 | 12.1 | 10.8 | 7.9 | 5.6 | 3.3 | 4.4 | 6.4 | 10.8 | 14 | 10.9 | 5.3 | 6 | 7.4 |
| Apparent mean temperature | 4.1 | 10.9 | 11.1 | 4.4 | 2.6 | 2.1 | 3.8 | 5.3 | 3.7 | 2.5 | 2.5 | 5.6 | 5.4 | 0.5 | 0.3 | 4.5 | 3.6 | 2.5 | 3.6 | -2 | 1.3 | 0 | -1.8 | -3.7 | 1.6 | 7.1 | 0.9 | -3.2 | -3 | -0.4 |
| Minimum temperature | 7.9 | 12.6 | 13.5 | 6.4 | 4.5 | 5 | 6.5 | 7.2 | 5.5 | 4.6 | 5.2 | 8.8 | 7.9 | 2.8 | 3.2 | 7.5 | 7.1 | 6.1 | 6.4 | 1 | 3.6 | 2.1 | 1 | 0.3 | 5.3 | 11.8 | 4.7 | -0.6 | 0.8 | 2.2 |
| Apparent min temperature | 10.3 | 13.2 | 13.4 | 7.2 | 6.2 | 7.5 | 9.2 | 9.7 | 8.5 | 7.9 | 8.1 | 10 | 8.8 | 5.8 | 5.9 | 9.5 | 9.1 | 8.8 | 7.6 | 4.6 | 3 | 1.1 | 1.7 | 3 | 7.1 | 9.2 | 6.2 | 2.3 | 2.2 | 4.8 |
| Settembre | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 13.3 | 13.2 | 13.2 | 13.1 | 13.1 | 13 | 13 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.8 | 11.8 |
| Sunshine duration (h) | 12.3 | 9.9 | 12.2 | 0 | 9.7 | 12.1 | 12 | 11.7 | 11.3 | 11.5 | 11.7 | 11.3 | 10.4 | 11.5 | 11.5 | 11.5 | 11.4 | 11.1 | 11 | 11.3 | 3.8 | 1.5 | 9.1 | 10.9 | 11 | 10.9 | 10.2 | 10.8 | 10.4 | 10.2 |
| Precipitation (mm) | 0 | 0 | 9.1 | 20.2 | 0.3 | 0 | 0 | 0.2 | 2.5 | 0.7 | 0 | 0.1 | 1 | 0.2 | 0 | 0 | 0 | 6 | 0 | 0 | 14.4 | 10.6 | 2.4 | 0 | 0 | 0 | 0 | 0 | 0 | 2.7 |
| Precipitation hours | 0 | 0 | 6 | 22 | 2 | 0 | 0 | 1 | 7 | 4 | 0 | 1 | 5 | 1 | 0 | 0 | 0 | 5 | 0 | 0 | 13 | 18 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Wind speed (m/s) | 22.2 | 19.4 | 20 | 10 | 18.1 | 16.1 | 14.9 | 14.6 | 11.7 | 9 | 12.8 | 14.8 | 13.7 | 12.3 | 11 | 10.6 | 15.4 | 19.8 | 18.4 | 15.8 | 12.4 | 9.4 | 10.5 | 14.5 | 17.8 | 25.1 | 23.7 | 13 | 15.6 | 11.6 |
In September 2023, the highest daytime temperature in Big Sky was 21.2°C.
While the minimum temperature at night dropped to -0.6°C.
The average nighttime and daytime temperatures during September in Big Sky are 5.4°C and 15.4°C respectively.
The precipitation sum in September is about 70 mm.