Average temperature in September is 21.6 °C
Average daytime temperature is 27.7 °C
Average night temperature is 16.3 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: 11.4 °C
Number of sunny days: 24
Number of rainy days: 6
Number of snow days:
Precipitation sum: 7 mm
* Weather data for Trenton 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 | 27.8 | 30.7 | 32 | 33.4 | 33.7 | 29.9 | 25.1 | 26.6 | 26.9 | 28.5 | 25.2 | 24.3 | 26.3 | 26.1 | 27.2 | 24.4 | 23.6 | 26.2 | 29.2 | 26.5 | 27.2 | 25 | 25.8 | 25.6 | 27.3 | 26.2 | 26 | 28.4 | 32.6 | 32.9 |
| Apparent max temperature | 29.1 | 32.3 | 33.1 | 34.8 | 34.5 | 30.7 | 25.8 | 27.8 | 28.2 | 30 | 26.4 | 24 | 26.4 | 24.4 | 26.6 | 24.9 | 22.2 | 24.5 | 28.6 | 25.9 | 27.5 | 25.6 | 27.1 | 25.2 | 27.3 | 26.8 | 26.4 | 27.9 | 32.4 | 32.8 |
| Mean temperature | 20.8 | 23 | 25.1 | 27.2 | 28.1 | 22.7 | 19.4 | 20.3 | 20.1 | 21.7 | 20.5 | 18.4 | 19.2 | 20 | 20.3 | 20.6 | 17.8 | 18.4 | 22.7 | 22.2 | 20.8 | 21.1 | 21.6 | 22.2 | 21.4 | 20.7 | 19.9 | 20.7 | 24.5 | 27 |
| Apparent mean temperature | 14.5 | 16.3 | 18.4 | 23.4 | 23 | 16.1 | 12.6 | 15 | 13.4 | 15.5 | 17.5 | 11.5 | 11.2 | 12.5 | 12.6 | 16.6 | 10.7 | 10.1 | 16.9 | 19.2 | 15.3 | 18.3 | 19.2 | 19.6 | 15.8 | 14.9 | 13.2 | 13.8 | 18.6 | 21.7 |
| Minimum temperature | 15.5 | 17.1 | 19.6 | 22.3 | 23.7 | 18 | 12.9 | 15.1 | 13.5 | 15.3 | 17.2 | 11.8 | 12.9 | 13.4 | 14.3 | 17.2 | 12.5 | 11.4 | 19.2 | 18.6 | 15.5 | 17.6 | 18.5 | 17.8 | 16 | 15.2 | 13.6 | 14.1 | 18.1 | 21.5 |
| Apparent min temperature | 20.5 | 22.9 | 25.3 | 28.4 | 28.2 | 21.1 | 19.3 | 20.8 | 20.5 | 22.3 | 20.7 | 18.6 | 18.1 | 18.6 | 18.8 | 20.9 | 16.7 | 17.1 | 20.8 | 22 | 20.7 | 21.3 | 22.2 | 23.3 | 21.2 | 20.7 | 19.4 | 20.1 | 24.4 | 26.7 |
| 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) | 13.1 | 13 | 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 | 12.4 | 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 | 12.1 | 12 | 11.9 | 11 | 11 | 11.8 | 11.2 | 11.7 | 11.7 | 2.7 | 10.7 | 11.7 | 11.7 | 11 | 8.3 | 11.5 | 11.5 | 9.5 | 10.1 | 11.4 | 5.8 | 7.3 | 11.2 | 11.2 | 11 | 11.1 | 11.1 | 11 | 10.9 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.7 | 0 | 0 | 1.2 | 0 | 0 | 2.2 | 2.2 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 3 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 13.7 | 15.5 | 20.1 | 22.7 | 29.5 | 24.5 | 11.8 | 9.1 | 9.7 | 8.7 | 14.5 | 10.2 | 8 | 11.6 | 14.7 | 18.1 | 15.3 | 18.3 | 21.8 | 21.4 | 16.1 | 17.1 | 25 | 19.8 | 15.8 | 9.9 | 14.9 | 15.5 | 20.3 | 19.6 |
In September 2023, the highest daytime temperature in Trenton was 33.7°C.
While the minimum temperature at night dropped to 11.4°C.
The average nighttime and daytime temperatures during September in Trenton are 16.3°C and 27.7°C respectively.
The precipitation sum in September is about 7 mm.