Climate almanac
Mascoutah
Illinois, United States · 38.49°, -89.79°
What is the weather like in Mascoutah in May?
In May, Mascoutah is typically 78°F (26°C) during the day and 60°F (15°C) at night. The month brings about 5.5 in (141 mm) of precipitation in total.
- Average high78°F (26°C)
- Average low60°F (15°C)
- Precipitation5.5 in (141 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)