Average temperature in September is 17 °C
Average daytime temperature is 21.6 °C
Average night temperature is 13.1 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: 4.7 °C
Number of sunny days: 17
Number of rainy days: 13
Number of snow days:
Precipitation sum: 217 mm
* Weather data for Clayton United States is based on climate observations for 2023 year
| September (°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 | 21.7 | 24 | 26.9 | 29.2 | 29.6 | 29.9 | 31.8 | 25.3 | 25.3 | 23 | 23.6 | 24.5 | 22.4 | 21 | 19.9 | 20.8 | 21.4 | 17.4 | 20 | 19.4 | 19.6 | 20.3 | 14.8 | 14.3 | 14.1 | 16.6 | 18.3 | 18.8 | 14.6 | 19.8 |
| Apparent max temperature | 23.5 | 24.3 | 29.4 | 32.9 | 33.8 | 33.9 | 33.7 | 29 | 29.3 | 26.9 | 27 | 27.1 | 27.1 | 20.5 | 17.9 | 18.3 | 22 | 19.7 | 17.5 | 18.8 | 20 | 19.7 | 14.1 | 12.9 | 13.6 | 14.8 | 17.3 | 18 | 14.4 | 19.8 |
| Mean temperature | 15.7 | 17.5 | 20.8 | 22.6 | 23.6 | 24.5 | 25 | 21.8 | 21.5 | 21.2 | 20.4 | 20.4 | 19.3 | 16.5 | 14.2 | 15.6 | 15.8 | 16.3 | 15.8 | 14.4 | 13.6 | 13.9 | 12.1 | 12.9 | 12.7 | 13 | 11 | 11.7 | 11.9 | 13.7 |
| Apparent mean temperature | 8.2 | 11.3 | 15.8 | 17.8 | 21.2 | 22.5 | 21.6 | 22 | 21.7 | 23.2 | 20.9 | 19.6 | 19.6 | 10.8 | 7.8 | 9.7 | 9.3 | 15.6 | 11.5 | 7.9 | 6.3 | 5.5 | 8.9 | 8.9 | 9.1 | 8.3 | 2.5 | 3.2 | 8.5 | 10.5 |
| Minimum temperature | 9.5 | 11.9 | 14.4 | 16.2 | 18.5 | 19.7 | 19.1 | 19.6 | 18.9 | 20.1 | 18.4 | 17.5 | 17.9 | 11.9 | 9.9 | 12.7 | 10.1 | 15 | 12.4 | 9.2 | 7.9 | 7 | 10.8 | 11.4 | 11.1 | 10.6 | 4.7 | 5.3 | 9.9 | 11 |
| Apparent min temperature | 15.4 | 17.7 | 22.6 | 25.3 | 27.2 | 28.4 | 28.2 | 25.1 | 24.9 | 24.5 | 23.5 | 22.9 | 21.5 | 16 | 12.5 | 13.2 | 15.2 | 17.6 | 14.7 | 13.3 | 12.7 | 13.3 | 10.5 | 10.7 | 11.4 | 11 | 9.6 | 10.6 | 11.2 | 13.4 |
| September | 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) | 13.2 | 13.1 | 13.1 | 13 | 13 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12 | 12 | 12 | 11.9 | 11.9 | 11.8 |
| Sunshine duration (h) | 12.1 | 11.4 | 12 | 11.9 | 11.9 | 11.9 | 11.8 | 2.6 | 7.3 | 0.3 | 7.3 | 9.7 | 4.6 | 11.6 | 10.1 | 8.8 | 9 | 0 | 11.4 | 11.4 | 11.1 | 10.8 | 0 | 0 | 0 | 8.1 | 10.9 | 8.8 | 0 | 5.6 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10.6 | 5.4 | 7.8 | 9.2 | 0.3 | 23.4 | 0 | 0 | 0 | 0 | 23.7 | 10.1 | 0 | 0 | 0 | 2.9 | 4.6 | 31 | 0 | 0 | 0 | 69.3 | 19.1 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 8 | 15 | 16 | 3 | 13 | 0 | 0 | 0 | 0 | 19 | 10 | 0 | 0 | 0 | 8 | 12 | 24 | 0 | 0 | 0 | 16 | 15 |
| Wind speed (m/s) | 7.6 | 11.4 | 11.6 | 9 | 11.3 | 9 | 14 | 17.8 | 7.9 | 11.3 | 6.6 | 6.9 | 7.7 | 13.9 | 15 | 21.9 | 14.5 | 9.3 | 20.5 | 11.8 | 9.3 | 11.3 | 17.1 | 20.2 | 18.1 | 16.9 | 9.3 | 8.7 | 10.6 | 11.2 |
In September 2023, the highest daytime temperature in Clayton was 31.8°C.
While the minimum temperature at night dropped to 4.7°C.
The average nighttime and daytime temperatures during September in Clayton are 13.1°C and 21.6°C respectively.
The precipitation sum in September is about 217 mm.