Average temperature in September is 22.3 °C
Average daytime temperature is 28.3 °C
Average night temperature is 17.6 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: 13.6 °C
Number of sunny days: 17
Number of rainy days: 13
Number of snow days:
Precipitation sum: 21 mm
* Weather data for Clemson 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 | 27.1 | 28.2 | 30 | 31.5 | 32.6 | 34.3 | 31 | 29.5 | 28.5 | 28.5 | 30.5 | 29.5 | 30.1 | 27.7 | 26.8 | 26.7 | 27.1 | 26.9 | 25.5 | 25.7 | 26.4 | 26.2 | 27.7 | 28.3 | 28.4 | 27.4 | 24.4 | 25.2 | 27.3 | 28.8 |
| Apparent max temperature | 28 | 31 | 33.4 | 34.4 | 36.2 | 37.2 | 33.7 | 31.6 | 32 | 32.2 | 33.7 | 34.1 | 33.8 | 28.7 | 28.5 | 28.1 | 29.4 | 27.5 | 26.8 | 26.6 | 26.6 | 26 | 29.1 | 29.8 | 31.2 | 28.8 | 24.7 | 26.5 | 29.6 | 30.6 |
| Mean temperature | 22.8 | 22.3 | 23.8 | 24.5 | 25.6 | 26.8 | 25.8 | 23.9 | 23.5 | 22.5 | 23.9 | 23.8 | 23.6 | 23 | 22.1 | 22 | 21.4 | 20.3 | 19.4 | 20 | 20.6 | 20.4 | 20.6 | 21.1 | 21.4 | 22 | 20.8 | 18.6 | 20.1 | 22.4 |
| Apparent mean temperature | 18.9 | 18.5 | 20.6 | 20.5 | 20.9 | 24.6 | 23.3 | 22.8 | 21.4 | 20.6 | 21.5 | 22.2 | 23.5 | 19.8 | 19.4 | 20.2 | 19.8 | 14.3 | 13.3 | 14.8 | 15.6 | 15.4 | 14 | 14.6 | 17 | 18.7 | 17.2 | 13.5 | 15 | 18.2 |
| Minimum temperature | 18.4 | 17.3 | 18.3 | 18.8 | 19 | 21.1 | 21.3 | 19.8 | 19.7 | 18.6 | 19.1 | 19.6 | 20.1 | 19.1 | 19.1 | 18 | 17.9 | 14.5 | 13.6 | 14.5 | 16.1 | 15.9 | 14.4 | 15.1 | 16.1 | 18.2 | 17.7 | 14.1 | 14.8 | 17.4 |
| Apparent min temperature | 23.7 | 23.7 | 26.5 | 26.9 | 28.2 | 30.1 | 27.8 | 26.7 | 25.8 | 25.1 | 27 | 27.3 | 27.1 | 24.8 | 23.2 | 23.9 | 23.6 | 21.2 | 19.6 | 21.1 | 20.9 | 20.3 | 20.7 | 21.4 | 22.9 | 23 | 20.8 | 18.8 | 21.2 | 24.2 |
| 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) | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.9 |
| Sunshine duration (h) | 12.1 | 11.2 | 11.8 | 12 | 10.1 | 10 | 11.3 | 10.1 | 11.4 | 8.7 | 11.2 | 10.4 | 10 | 11 | 8.1 | 7.5 | 9 | 11.2 | 11.2 | 7.2 | 9.6 | 11.1 | 11.1 | 11.1 | 11.1 | 10.6 | 9 | 9.9 | 10.9 | 10.9 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 3.4 | 0.1 | 1 | 2.1 | 0.1 | 8.5 | 0.3 | 0.1 | 0.9 | 0.3 | 4.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.1 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 2 | 9 | 1 | 5 | 3 | 1 | 2 | 2 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Wind speed (m/s) | 14.5 | 7.9 | 11.6 | 8 | 10.5 | 9.5 | 15.5 | 10.1 | 12 | 11.2 | 7.2 | 11.8 | 13.8 | 16.7 | 14.6 | 14.2 | 12.2 | 10.7 | 9.4 | 6 | 12.6 | 15.5 | 10.2 | 11 | 9 | 13.5 | 17.7 | 15 | 6.6 | 6.8 |
In September 2023, the highest daytime temperature in Clemson was 34.3°C.
While the minimum temperature at night dropped to 13.6°C.
The average nighttime and daytime temperatures during September in Clemson are 17.6°C and 28.3°C respectively.
The precipitation sum in September is about 21 mm.