Average temperature in September is 24 °C
Average daytime temperature is 29.5 °C
Average night temperature is 19.5 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: 16.1 °C
Number of sunny days: 17
Number of rainy days: 13
Number of snow days:
Precipitation sum: 38 mm
* Weather data for Milan 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 | 28.2 | 26.9 | 29.8 | 30.9 | 30.4 | 32.7 | 33 | 31.6 | 30.6 | 31.3 | 32.1 | 33.3 | 32.4 | 32.6 | 28.5 | 30.9 | 27.5 | 27.7 | 28.4 | 29.9 | 27.9 | 27.9 | 29.8 | 30.6 | 31.8 | 24.3 | 24.1 | 23.7 | 28.5 | 29.1 |
| Apparent max temperature | 32.3 | 29.2 | 33.8 | 35.4 | 33.2 | 36.8 | 36.2 | 35.5 | 34 | 36.4 | 37.6 | 38.8 | 37.4 | 36.4 | 30.6 | 32.9 | 30.4 | 28.6 | 30.3 | 30 | 29.5 | 27.4 | 29.5 | 30.8 | 33.9 | 27.6 | 25.2 | 23.7 | 30.7 | 29.8 |
| Mean temperature | 25.9 | 23.2 | 24.4 | 24.9 | 24.7 | 25.8 | 27.2 | 24.3 | 24.6 | 25.1 | 26.4 | 26.2 | 25.7 | 26 | 24.5 | 24.2 | 24.2 | 22.7 | 22 | 23.3 | 22.7 | 22.7 | 22.5 | 23.2 | 24.4 | 22.3 | 21.1 | 20.3 | 21.4 | 23.3 |
| Apparent mean temperature | 26 | 21.3 | 21.9 | 22.1 | 21.6 | 22.2 | 25.1 | 22.5 | 23 | 23.8 | 24.2 | 25.2 | 24.8 | 25 | 24.9 | 20.1 | 23.3 | 17.8 | 16.4 | 19.3 | 20.2 | 19.4 | 16.5 | 16.6 | 19 | 21.5 | 20.3 | 15.8 | 16.6 | 20 |
| Minimum temperature | 23.3 | 20.5 | 19.3 | 19.6 | 19.4 | 20.1 | 22.9 | 19.6 | 20.1 | 20.4 | 21.1 | 21.3 | 21.2 | 21.6 | 21.5 | 19.7 | 21.1 | 17.6 | 16.1 | 18.3 | 19.3 | 18.6 | 16.6 | 16.1 | 18.7 | 20.9 | 19.1 | 16.7 | 16.6 | 18.7 |
| Apparent min temperature | 28.8 | 24.7 | 27.2 | 27.9 | 27.5 | 28.9 | 29.8 | 27.4 | 27.7 | 28.9 | 30 | 30.1 | 29.5 | 29.2 | 26.8 | 24.9 | 26.6 | 24.2 | 22.8 | 23.8 | 23.8 | 23 | 22.4 | 23.6 | 25.4 | 24.6 | 22.3 | 19.8 | 22.1 | 24.4 |
| 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) | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 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 | 12 | 11.9 | 11.9 |
| Sunshine duration (h) | 8.6 | 3.2 | 11.3 | 11.8 | 10.8 | 11.7 | 10.9 | 11.2 | 11.4 | 11 | 10.6 | 10.3 | 9.2 | 9.1 | 8.3 | 11 | 8.9 | 11.2 | 11.1 | 7.8 | 9.8 | 11.1 | 11.1 | 11.1 | 11.1 | 0 | 5.4 | 9.1 | 10.9 | 9.9 |
| Precipitation (mm) | 0 | 1.6 | 0 | 0 | 0 | 0 | 1.2 | 9.4 | 0 | 0.5 | 1 | 1.5 | 0.4 | 2.4 | 1.4 | 0 | 2.7 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 12.4 | 2 | 0 | 0 | 0 |
| Precipitation hours | 0 | 4 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 1 | 2 | 3 | 2 | 2 | 7 | 0 | 12 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 11 | 7 | 0 | 0 | 0 |
| Wind speed (m/s) | 18.8 | 12.6 | 10.2 | 8.9 | 8.8 | 10 | 14.5 | 12.7 | 11.5 | 8.8 | 9.5 | 15.8 | 16.6 | 14.8 | 16.9 | 12.8 | 15.8 | 11.5 | 8.4 | 14.1 | 21.8 | 19.8 | 13.7 | 13.5 | 10.3 | 14 | 22.3 | 18 | 13.6 | 16.3 |
In September 2023, the highest daytime temperature in Milan was 33.3°C.
While the minimum temperature at night dropped to 16.1°C.
The average nighttime and daytime temperatures during September in Milan are 19.5°C and 29.5°C respectively.
The precipitation sum in September is about 38 mm.