Average temperature in April is 9 °C
Average daytime temperature is 15.4 °C
Average night temperature is 3.5 °C
Absolute maximum temperature: 26.4 °C
Absolute minimum temperature: -5.8 °C
Number of sunny days: 10
Number of rainy days: 19
Number of snow days: 1
Precipitation sum: 94 mm
* Weather data for Williamsville United States is based on climate observations for 2023 year
| Aprile (°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 | 16.7 | 5.6 | 17 | 16.7 | 22.4 | 17.8 | 7.9 | 10 | 11.4 | 16.2 | 18.7 | 22.1 | 25 | 26.4 | 22.6 | 23.5 | 16.1 | 3.7 | 13 | 23.6 | 23.9 | 17.7 | 6.9 | 7.8 | 8.5 | 11.9 | 15.3 | 10.6 | 11.1 | 12.3 |
| Apparent max temperature | 12.2 | 2.3 | 13.4 | 15.2 | 21.1 | 17 | 3.4 | 7.8 | 9.5 | 14.5 | 14.4 | 19.1 | 23.5 | 26.3 | 22.5 | 22.4 | 16.1 | -2.5 | 9.7 | 22.9 | 21.7 | 15.1 | 4.7 | 4.3 | 5 | 8.6 | 13.7 | 7.1 | 9.1 | 11 |
| Mean temperature | 10.3 | 0 | 6.4 | 10.9 | 13.6 | 11.5 | 3.7 | 1.4 | 4.1 | 7.5 | 10.2 | 15 | 17 | 18 | 16.9 | 16.3 | 7.1 | 1.3 | 4.5 | 11.4 | 17.6 | 11.8 | 4.7 | 2.6 | 2.5 | 5.2 | 6.5 | 7.7 | 7.1 | 9.6 |
| Apparent mean temperature | -3.1 | -11.2 | -5.2 | 2.3 | 4.9 | 3 | -4.8 | -9.4 | -7.3 | -3.1 | -0.3 | 4.3 | 7.2 | 7.8 | 11.9 | 9.4 | -1.5 | -5.6 | -5.7 | 0.1 | 8.3 | 6.1 | -2.3 | -5.5 | -6.6 | -2.7 | -4.7 | 2 | 0 | 2.8 |
| Minimum temperature | 3.5 | -5.8 | -0.5 | 5.3 | 8 | 7.5 | -0.3 | -5.1 | -2.8 | 0.6 | 3.6 | 7.7 | 10.3 | 9.7 | 13.1 | 10.3 | 3 | -0.4 | -0.9 | 3.5 | 11.5 | 8.7 | 1.3 | -1.7 | -2.7 | 0.9 | -1.1 | 6.2 | 4.7 | 6.7 |
| Apparent min temperature | 6.3 | -5.1 | 2.2 | 8.4 | 11.9 | 9.3 | -0.9 | -2.2 | 0.3 | 4.1 | 6.3 | 11.4 | 14.5 | 16.7 | 16 | 15.7 | 3.4 | -4.2 | 0.4 | 8.9 | 15 | 9.5 | 1.2 | -1.1 | -1.3 | 2.1 | 3.5 | 4 | 3.5 | 7.1 |
| Aprile | 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) | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 13 | 13 | 13.1 | 13.1 | 13.1 | 13.2 | 13.2 | 13.3 | 13.3 | 13.4 | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 14 |
| Sunshine duration (h) | 6 | 11.6 | 9.9 | 6.9 | 4.7 | 0.3 | 10.7 | 12 | 12.1 | 12.2 | 12.2 | 11.9 | 12.3 | 12.1 | 6 | 10 | 2.5 | 1 | 12 | 11.5 | 12.3 | 0.4 | 4.2 | 9.4 | 11.6 | 10.1 | 12.8 | 0.3 | 0 | 0 |
| Precipitation (mm) | 14.5 | 0.9 | 0 | 0.1 | 14.7 | 4.7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.2 | 0.8 | 14.1 | 2.6 | 0.1 | 0.7 | 0.2 | 7.9 | 0.6 | 1 | 0.2 | 1.8 | 0 | 8.7 | 2.9 | 13.6 |
| Precipitation hours | 18 | 6 | 0 | 1 | 5 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 17 | 15 | 1 | 1 | 2 | 12 | 5 | 6 | 2 | 9 | 0 | 9 | 17 | 14 |
| Wind speed (m/s) | 33.6 | 28.9 | 22 | 16.4 | 22.6 | 17.4 | 19.1 | 12.5 | 12.4 | 12 | 22.7 | 28.4 | 15.6 | 11.6 | 11.8 | 19.7 | 25 | 25.2 | 20.5 | 14.8 | 20.4 | 29.5 | 15.5 | 16 | 12.7 | 13.6 | 14.2 | 26.4 | 26.1 | 22.7 |
In April 2023, the highest daytime temperature in Williamsville was 26.4°C.
While the minimum temperature at night dropped to -5.8°C.
The average nighttime and daytime temperatures during April in Williamsville are 3.5°C and 15.4°C respectively.
The precipitation sum in April is about 94 mm.