Climate almanac
Mascoutah
Illinois, United States · 38.49°, -89.79°
What is the weather like in Mascoutah in December?
In December, Mascoutah is typically 47°F (9°C) during the day and 32°F (0°C) at night. The month brings about 2.9 in (73 mm) of precipitation in total. Snowfall averages about 1.4 in (35 mm) over the month.
- Average high47°F (9°C)
- Average low32°F (0°C)
- Precipitation2.9 in (73 mm)
- Clear or mostly clear days8
- Snowfall1.4 in (35 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)