Average annual temperature is 17.2 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -4.3 °C
Number of sunny days: 174 days
Number of rainy days: 191 days
Look at detailed online map of Mount Vernon
* Weather data for Mount Vernon United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.8 | 24.9 | 25.1 | 28.7 | 30.3 | 34.6 | 36.0 | 37.3 | 33.0 | 28.1 | 25.6 | 21.1 |
| Average daytime temperature (°C) | 13.9 | 17.2 | 18.2 | 21.4 | 25.9 | 29.9 | 32.6 | 32.1 | 28.9 | 22.9 | 17.6 | 13.3 |
| Average temperature (°C) | 9.2 | 11.7 | 12.5 | 15.7 | 20.1 | 23.8 | 26.4 | 26.2 | 23.1 | 17.6 | 12.0 | 8.3 |
| Average night temperature (°C) | 5.7 | 7.8 | 7.8 | 11.1 | 15.3 | 19.1 | 21.7 | 21.8 | 18.6 | 13.2 | 7.9 | 4.5 |
| Absolute minimum temperature (°C) | -2.8 | -3.1 | -4.3 | 6.3 | 7.4 | 16.7 | 18.6 | 17.7 | 14.4 | 7.2 | -2.1 | -2.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 6.5 | 8.3 | 9.3 | 10.7 | 11.4 | 11.2 | 10.3 | 10.7 | 8.6 | 7.1 | 6.8 |
| Precipitation (mm) | 215 | 126 | 128 | 154 | 94 | 103 | 79 | 157 | 16 | 19 | 81 | 119 |
| Sunny days | 12 | 11 | 19 | 11 | 11 | 12 | 5 | 13 | 18 | 21 | 19 | 22 |
| Rainy days | 19 | 17 | 12 | 19 | 20 | 18 | 26 | 18 | 12 | 10 | 11 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mount Vernon during the most sunny months:
The largest precipitation sum in Mount Vernon is at