Average annual temperature is 9.7 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 186 days
Number of rainy days: 132 days
Number of snow days: 47 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) | 10.2 | 12.3 | 11.3 | 27.3 | 29.7 | 32.4 | 37.0 | 37.9 | 31.9 | 27.0 | 17.5 | 14.1 |
| Average daytime temperature (°C) | 5.4 | 6.8 | 6.2 | 13.8 | 21.4 | 24.4 | 32.8 | 29.8 | 24.2 | 18.3 | 11.1 | 7.9 |
| Average temperature (°C) | 0.0 | -0.1 | 0.6 | 6.6 | 13.9 | 17.2 | 23.5 | 21.6 | 15.7 | 10.2 | 4.0 | 2.0 |
| Average night temperature (°C) | -3.6 | -4.6 | -3.8 | 0.8 | 7.1 | 10.3 | 14.7 | 14.1 | 8.9 | 4.4 | -0.4 | -1.4 |
| Absolute minimum temperature (°C) | -14.9 | -8.9 | -8.5 | -6.5 | 0.9 | 2.1 | 10.7 | 9.6 | 1.9 | -4.9 | -7.5 | -6.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.5 | 11.9 | 13.5 | 14.8 | 15.5 | 15.1 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.6 | 6.7 | 6.1 | 9.3 | 11.7 | 12.6 | 13.8 | 11.3 | 9.5 | 8.3 | 6.5 | 4.7 |
| Precipitation (mm) | 51 | 21 | 91 | 58 | 63 | 8 | 1 | 56 | 29 | 27 | 51 | 70 |
| Sunny days | 11 | 13 | 6 | 9 | 16 | 19 | 29 | 21 | 18 | 19 | 17 | 8 |
| Rainy days | 11 | 7 | 12 | 11 | 15 | 11 | 2 | 10 | 12 | 11 | 12 | 18 |
| Snow days | 9 | 8 | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 5 |
The best time to visit Mount Vernon during the most sunny months:
Months with the longest average daylight duration in Mount Vernon:
The largest precipitation sum in Mount Vernon is at