Average temperature in September is 28.2 °C
Average daytime temperature is 33.9 °C
Average night temperature is 23.2 °C
Absolute maximum temperature: 41.6 °C
Absolute minimum temperature: 19.1 °C
Number of sunny days: 16
Number of rainy days: 14
Number of snow days:
Precipitation sum: 95 mm
* Weather data for Westlake 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 | 36 | 35.5 | 35.3 | 36.8 | 39 | 39.6 | 41.3 | 41.6 | 35 | 34.4 | 32.8 | 28.3 | 26.5 | 25.5 | 28.9 | 28 | 30.1 | 31.9 | 33.5 | 34 | 33 | 34.9 | 34.9 | 37.7 | 31.1 | 32.5 | 33.7 | 35.2 | 34.6 | 34.9 |
| Apparent max temperature | 37.5 | 36.7 | 36.7 | 37.8 | 40.6 | 43.2 | 42.3 | 41.8 | 38.7 | 34 | 33.5 | 29.1 | 30 | 27.9 | 32.3 | 31.7 | 33 | 32.9 | 33.2 | 35.6 | 37.1 | 37.1 | 38.2 | 41.3 | 33.9 | 34.6 | 35.4 | 36.1 | 35.5 | 34.8 |
| Mean temperature | 30.5 | 29.6 | 29.3 | 29.9 | 32.4 | 33.6 | 33.8 | 35.4 | 30.1 | 28.6 | 26.9 | 25.1 | 23.4 | 22.8 | 23.1 | 23.3 | 24.2 | 25.7 | 27.1 | 27.4 | 28.3 | 27.8 | 29.5 | 30.9 | 26.1 | 26.8 | 27.4 | 28.1 | 29.2 | 28.8 |
| Apparent mean temperature | 24.5 | 23.2 | 21.8 | 26.9 | 29.1 | 30 | 29.2 | 28.6 | 26.7 | 23.8 | 22.1 | 23.9 | 23.8 | 23.4 | 22.6 | 23 | 22.3 | 19.7 | 21.3 | 21.6 | 26.5 | 24.2 | 27.8 | 27 | 24.8 | 22.9 | 23 | 23.2 | 25.5 | 24.6 |
| Minimum temperature | 24.6 | 22.7 | 21.3 | 25.6 | 26.5 | 27.7 | 26.5 | 30 | 24.8 | 22.7 | 21.5 | 21.6 | 21.5 | 21.2 | 20.1 | 19.9 | 19.9 | 19.1 | 22.6 | 22.6 | 25.1 | 23 | 25.4 | 26 | 21.9 | 21.1 | 21.5 | 21.1 | 23.8 | 23.2 |
| Apparent min temperature | 30.5 | 29.3 | 29.3 | 31.1 | 33.9 | 35.7 | 35.5 | 34.9 | 31.8 | 29.1 | 26.5 | 26.4 | 25.8 | 25.5 | 25.7 | 26.8 | 27 | 26.3 | 26.4 | 27.9 | 30.3 | 30 | 31.9 | 33 | 29.6 | 28.3 | 28.8 | 29.5 | 30.3 | 29.4 |
| 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) | 12.9 | 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 | 12.3 | 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) | 12.1 | 11.4 | 7.5 | 9.5 | 11.9 | 11.6 | 11.7 | 11.7 | 11 | 11.2 | 8.1 | 7.4 | 6 | 4.4 | 9.1 | 6.6 | 11.2 | 11.3 | 10.2 | 11.2 | 11 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11 | 11 | 11 | 10.9 |
| Precipitation (mm) | 0 | 0 | 1.5 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 3.1 | 9.5 | 10.3 | 14.8 | 3.8 | 0.8 | 0.1 | 0 | 0.1 | 13.2 | 0 | 35.3 | 0.1 | 0 | 2.6 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 9 | 11 | 13 | 10 | 6 | 1 | 0 | 1 | 2 | 0 | 7 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 20.3 | 20.8 | 22.7 | 27.3 | 22.9 | 17.6 | 11.5 | 19.5 | 19.8 | 18.4 | 14.8 | 16.6 | 13 | 14.4 | 14.5 | 8 | 7.1 | 11.6 | 24.2 | 25.6 | 22.1 | 24.2 | 22.5 | 27.8 | 19.1 | 17.8 | 11.6 | 13 | 19.2 | 20.7 |
In September 2023, the highest daytime temperature in Westlake was 41.6°C.
While the minimum temperature at night dropped to 19.1°C.
The average nighttime and daytime temperatures during September in Westlake are 23.2°C and 33.9°C respectively.
The precipitation sum in September is about 95 mm.