Climate almanac
Vandalia
Illinois, United States · 38.96°, -89.09°
What is the weather like in Vandalia in July?
In July, Vandalia is typically 87°F (31°C) during the day and 70°F (21°C) at night. The month brings about 5.3 in (134 mm) of precipitation in total.
- Average high87°F (31°C)
- Average low70°F (21°C)
- Precipitation5.3 in (134 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)