Average temperature in September is 19.8 °C
Average daytime temperature is 25.3 °C
Average night temperature is 15.4 °C
Absolute maximum temperature: 35 °C
Absolute minimum temperature: 6.9 °C
Number of sunny days: 13
Number of rainy days: 17
Number of snow days:
Precipitation sum: 141 mm
* Weather data for Northfield 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 | 31.1 | 33.5 | 34.4 | 35 | 32.7 | 22.6 | 21.3 | 23.6 | 26.1 | 23 | 22.5 | 20.1 | 19 | 26.7 | 23.3 | 22.1 | 21.5 | 23.6 | 28.2 | 29.2 | 28 | 24.7 | 24 | 23.1 | 20.3 | 18.8 | 21.6 | 22.3 | 26 | 29.4 |
| Apparent max temperature | 30.3 | 34.6 | 35.2 | 33.9 | 34.1 | 25.8 | 21 | 24 | 26.1 | 21.8 | 21.2 | 17.6 | 17.9 | 24.4 | 21.9 | 20.3 | 20.8 | 21.5 | 28.3 | 28.8 | 27.8 | 23.6 | 24.1 | 22.9 | 21.3 | 18.9 | 21.4 | 21 | 26.8 | 31.8 |
| Mean temperature | 23.2 | 26.2 | 29.5 | 29.1 | 28.4 | 20.5 | 17.4 | 16 | 19.5 | 18.4 | 16.8 | 15 | 12.9 | 17.4 | 19.6 | 16.7 | 15.8 | 16.2 | 20.6 | 21.5 | 22 | 20.2 | 19.8 | 19.6 | 17.4 | 16.3 | 17.6 | 17.9 | 19 | 23.8 |
| Apparent mean temperature | 15.4 | 19.8 | 23.5 | 23.9 | 25.1 | 16.7 | 12.2 | 9.2 | 13.7 | 14.2 | 10.5 | 9.7 | 5 | 9.9 | 15.6 | 9.4 | 8.8 | 9.1 | 13.7 | 15.4 | 16.5 | 15.7 | 18.2 | 16.7 | 16.1 | 14.5 | 14.9 | 14.4 | 14.8 | 19.5 |
| Minimum temperature | 18.1 | 21.2 | 24.5 | 24 | 23.4 | 17.8 | 13.3 | 10.1 | 15.3 | 14.2 | 11.4 | 10.8 | 6.9 | 12.1 | 16.6 | 10.6 | 9.8 | 11 | 15.1 | 15.3 | 16.3 | 15.8 | 17 | 17.3 | 15.7 | 14.2 | 14.9 | 14.8 | 15.9 | 20 |
| Apparent min temperature | 21.3 | 26.1 | 29 | 28.8 | 28.6 | 20.4 | 15.9 | 15.8 | 18.8 | 17.8 | 15.9 | 13.8 | 11.2 | 15.2 | 17.9 | 15.9 | 14.8 | 14.4 | 19.6 | 21.3 | 21.9 | 19.6 | 20.7 | 19.4 | 18.2 | 16.3 | 17.3 | 17.4 | 18 | 25 |
| 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 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12 | 12 | 11.9 | 11.9 | 11.8 | 11.8 |
| Sunshine duration (h) | 12.2 | 10.1 | 11.4 | 12 | 10.3 | 2.1 | 10.8 | 11.8 | 10 | 8.8 | 11.8 | 11.4 | 11.7 | 11.6 | 1.3 | 10.9 | 11.5 | 11.5 | 11 | 11.4 | 11.3 | 2.8 | 4.3 | 9.8 | 7.2 | 5.3 | 10.1 | 7.8 | 6.8 | 9.4 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0.3 | 2.6 | 0 | 0 | 2.7 | 0 | 0.1 | 0.1 | 0 | 0 | 9.6 | 2.5 | 0 | 1.2 | 0 | 0 | 0 | 0.6 | 23.3 | 30.5 | 13 | 3 | 2.8 | 0.4 | 30.6 | 18.1 |
| Precipitation hours | 0 | 0 | 0 | 0 | 3 | 5 | 0 | 0 | 3 | 0 | 1 | 1 | 0 | 0 | 8 | 3 | 0 | 1 | 0 | 0 | 0 | 4 | 14 | 14 | 14 | 11 | 11 | 4 | 7 | 3 |
| Wind speed (m/s) | 24.9 | 22.1 | 27.8 | 26.3 | 23.9 | 21.6 | 18.2 | 8 | 18.9 | 14.8 | 14.5 | 17.4 | 13 | 22.8 | 18.2 | 17.1 | 10.1 | 19.3 | 22.4 | 16 | 18.5 | 16.8 | 26.4 | 30.1 | 13.9 | 18.8 | 15.9 | 18.9 | 27.2 | 24.8 |
In September 2023, the highest daytime temperature in Northfield was 35°C.
While the minimum temperature at night dropped to 6.9°C.
The average nighttime and daytime temperatures during September in Northfield are 15.4°C and 25.3°C respectively.
The precipitation sum in September is about 141 mm.