Average annual temperature is 15.3 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: -6.9 °C
Number of sunny days: 175 days
Number of rainy days: 190 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) | 18.8 | 23.7 | 23.7 | 27.5 | 29.6 | 32.9 | 35.5 | 37.0 | 32.2 | 29.2 | 25.5 | 18.4 |
| Average daytime temperature (°C) | 11.1 | 14.6 | 15.2 | 20.3 | 25.2 | 29.0 | 30.8 | 29.9 | 27.2 | 21.6 | 15.8 | 11.6 |
| Average temperature (°C) | 6.6 | 8.5 | 9.3 | 14.0 | 19.0 | 22.4 | 25.0 | 24.3 | 21.3 | 16.0 | 9.8 | 6.5 |
| Average night temperature (°C) | 3.2 | 4.6 | 4.6 | 8.9 | 13.9 | 17.1 | 20.5 | 19.8 | 16.5 | 11.6 | 5.5 | 2.9 |
| Absolute minimum temperature (°C) | -4.2 | -6.3 | -6.9 | 1.8 | 4.9 | 11.3 | 16.1 | 14.3 | 12.0 | -1.2 | -4.4 | -6.1 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.7 | 6.1 | 7.8 | 9.0 | 10.5 | 11.0 | 11.3 | 9.7 | 10.1 | 7.8 | 7.8 | 6.1 |
| Precipitation (mm) | 161 | 158 | 141 | 89 | 123 | 132 | 169 | 184 | 110 | 41 | 56 | 95 |
| Sunny days | 12 | 13 | 19 | 15 | 15 | 13 | 6 | 13 | 13 | 18 | 23 | 15 |
| Rainy days | 19 | 15 | 12 | 15 | 16 | 17 | 25 | 18 | 17 | 13 | 7 | 16 |
| 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