Average annual temperature is 10.1 °C
Absolute maximum temperature: 40.9 °C
Absolute minimum temperature: -27.3 °C
Number of sunny days: 222 days
Number of rainy days: 109 days
Number of snow days: 34 days
Look at detailed online map of City of Mount Vernon
* Weather data for City of 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) | 3.0 | 7.3 | 16.2 | 28.8 | 32.0 | 36.6 | 37.6 | 40.9 | 39.5 | 32.5 | 19.6 | 12.5 |
| Average daytime temperature (°C) | -3.5 | -0.4 | 4.6 | 15.1 | 25.3 | 30.4 | 30.3 | 31.5 | 27.6 | 16.1 | 10.2 | 4.9 |
| Average temperature (°C) | -7.2 | -5.8 | -2.2 | 7.7 | 18.5 | 24.2 | 23.9 | 24.8 | 21.1 | 10.8 | 4.3 | 0.3 |
| Average night temperature (°C) | -10.5 | -10.2 | -6.1 | 2.0 | 12.2 | 18.4 | 18.3 | 19.4 | 15.7 | 6.5 | 0.0 | -3.0 |
| Absolute minimum temperature (°C) | -23.8 | -27.3 | -14.5 | -7.8 | 1.8 | 11.1 | 12.2 | 14.7 | 9.8 | -7.8 | -8.5 | -7.5 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| 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) | 4.1 | 7.7 | 7.4 | 9.7 | 11.9 | 12.5 | 13.0 | 11.5 | 10.4 | 7.0 | 7.4 | 5.4 |
| Precipitation (mm) | 47 | 25 | 33 | 35 | 65 | 52 | 54 | 109 | 45 | 116 | 7 | 38 |
| Sunny days | 20 | 20 | 17 | 18 | 16 | 14 | 14 | 22 | 17 | 17 | 24 | 23 |
| Rainy days | 3 | 4 | 3 | 7 | 15 | 16 | 17 | 9 | 13 | 13 | 3 | 6 |
| Snow days | 8 | 4 | 11 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 2 |
The best time to visit City of Mount Vernon during the most sunny months:
Months with the longest average daylight duration in City of Mount Vernon:
The largest precipitation sum in City of Mount Vernon is at