Average annual temperature is 9.5 °C
Absolute maximum temperature: 30.5 °C
Absolute minimum temperature: -19.9 °C
Number of sunny days: 126 days
Number of rainy days: 206 days
Number of snow days: 33 days
Look at detailed online map of Vandalia
* Weather data for Vandalia 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) | 13.2 | 16.6 | 14.2 | 27.9 | 29.4 | 30.5 | 30.4 | 29.6 | 30.0 | 26.7 | 15.7 | 13.4 |
| Average daytime temperature (°C) | 3.8 | 6.7 | 5.8 | 16.1 | 19.9 | 23.1 | 26.1 | 24.0 | 21.6 | 15.4 | 7.9 | 6.2 |
| Average temperature (°C) | 0.4 | 0.1 | 0.8 | 9.2 | 12.8 | 17.3 | 20.6 | 18.9 | 16.2 | 11.1 | 3.5 | 2.8 |
| Average night temperature (°C) | -2.3 | -4.7 | -3.2 | 3.6 | 6.4 | 12.2 | 15.9 | 14.9 | 12.1 | 7.7 | 0.2 | 0.1 |
| Absolute minimum temperature (°C) | -9.2 | -19.9 | -10.4 | -6.1 | -0.7 | 7.7 | 11.8 | 9.6 | 6.2 | -0.8 | -8.3 | -5.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.3 | 5.9 | 5.5 | 8.3 | 11.2 | 10.9 | 11.5 | 9.9 | 8.7 | 5.7 | 5.9 | 3.2 |
| Precipitation (mm) | 123 | 72 | 117 | 88 | 40 | 93 | 141 | 130 | 45 | 85 | 59 | 80 |
| Sunny days | 8 | 8 | 5 | 11 | 22 | 10 | 7 | 5 | 14 | 15 | 10 | 11 |
| Rainy days | 15 | 15 | 15 | 18 | 9 | 20 | 24 | 26 | 16 | 16 | 16 | 16 |
| Snow days | 8 | 5 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 |
The best time to visit Vandalia during the most sunny months:
The largest precipitation sum in Vandalia is at