Average temperature in September is 21.7 °C
Average daytime temperature is 28.1 °C
Average night temperature is 16.4 °C
Absolute maximum temperature: 33 °C
Absolute minimum temperature: 12.5 °C
Number of sunny days: 15
Number of rainy days: 15
Number of snow days:
Precipitation sum: 26 mm
* Weather data for Roundhill 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 | 29.1 | 31.1 | 32.1 | 33 | 31.2 | 31.5 | 25.7 | 27.1 | 27.2 | 27.7 | 28.8 | 24.1 | 26.1 | 26.3 | 26.3 | 26.5 | 24.3 | 24.4 | 25.8 | 28.5 | 28.3 | 29.5 | 27.8 | 27.5 | 29.8 | 30 | 29.1 | 25.8 | 28.6 | 28.7 |
| Apparent max temperature | 32.4 | 34.4 | 35.3 | 35.8 | 34.6 | 34.6 | 26.9 | 29.1 | 28.4 | 30 | 32.1 | 27.1 | 26 | 26.4 | 27 | 28.9 | 25.3 | 24.4 | 25.6 | 28.2 | 29.7 | 30.3 | 27.2 | 29 | 32.1 | 31.7 | 29.9 | 26.9 | 31 | 30.8 |
| Mean temperature | 21.3 | 25.4 | 25.1 | 25.4 | 25.9 | 24.4 | 22.1 | 21.2 | 21.8 | 21.8 | 22.4 | 21.1 | 20.4 | 19.3 | 19.6 | 20.1 | 19 | 18.1 | 18.5 | 20.4 | 22.4 | 22.3 | 21.8 | 20 | 22.6 | 22.6 | 22.5 | 21.2 | 21.2 | 22 |
| Apparent mean temperature | 14.7 | 24.1 | 20.7 | 20.7 | 24.2 | 23.2 | 19.1 | 18 | 17.2 | 17.9 | 17.8 | 20.2 | 15.2 | 11.3 | 12.1 | 13.4 | 14.3 | 12 | 11.2 | 13 | 17.4 | 15.7 | 15.5 | 12.1 | 17.7 | 16 | 17 | 17.8 | 17.2 | 17.5 |
| Minimum temperature | 15.1 | 21.1 | 18.7 | 19.4 | 22 | 20.6 | 17.9 | 16.7 | 16.8 | 17.4 | 16.7 | 18.8 | 15 | 13.4 | 13.8 | 14.3 | 14.7 | 12.6 | 12.5 | 13.8 | 17.2 | 15.5 | 16 | 13.9 | 16.9 | 16 | 16.4 | 17.4 | 16.1 | 16.4 |
| Apparent min temperature | 22.4 | 28.8 | 28.1 | 27.7 | 28.6 | 27.6 | 23.9 | 22.9 | 22.9 | 23.2 | 24.5 | 23.1 | 20.5 | 18.2 | 18.6 | 20.1 | 19.2 | 17.7 | 18.2 | 20.1 | 22.8 | 22.6 | 21.3 | 19.3 | 23.9 | 23.6 | 23.1 | 22.3 | 23.1 | 23.6 |
| 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 | 12.9 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 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 | 12.1 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.9 |
| Sunshine duration (h) | 12 | 11.7 | 11.9 | 11.6 | 10.8 | 8.7 | 10 | 11.5 | 11.6 | 11.6 | 11.6 | 4.3 | 11.5 | 11.5 | 11.5 | 10.8 | 9.2 | 11.2 | 11.3 | 11.3 | 11.1 | 11.1 | 11.1 | 10.7 | 10 | 11 | 11 | 10.9 | 10.4 | 10.9 |
| Precipitation (mm) | 1.1 | 0.1 | 0 | 0.3 | 2.4 | 0.9 | 0 | 0.9 | 0.5 | 0.9 | 0 | 1.2 | 0 | 0 | 0 | 0.7 | 2.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.8 | 0 | 0.4 | 12.5 | 0.2 | 0 |
| Precipitation hours | 5 | 1 | 0 | 3 | 3 | 4 | 0 | 4 | 4 | 5 | 0 | 5 | 0 | 0 | 0 | 5 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 9 | 2 | 0 |
| Wind speed (m/s) | 11.4 | 9.8 | 7.6 | 8.9 | 11.6 | 17.3 | 12.3 | 9.5 | 11.2 | 11 | 9.7 | 13.8 | 13.2 | 10.8 | 12.3 | 10.5 | 15.4 | 16 | 9 | 11.2 | 12.4 | 12.2 | 10.7 | 12.7 | 8.7 | 10.5 | 10.1 | 17.6 | 8.9 | 10.3 |
In September 2023, the highest daytime temperature in Roundhill was 33°C.
While the minimum temperature at night dropped to 12.5°C.
The average nighttime and daytime temperatures during September in Roundhill are 16.4°C and 28.1°C respectively.
The precipitation sum in September is about 26 mm.