Climate almanac
Decatur
Illinois, United States · 39.84°, -88.95°
What is the weather like in Decatur in April?
In April, Decatur is typically 65°F (18°C) during the day and 45°F (7°C) at night. The month brings about 5.2 in (131 mm) of precipitation in total. Snowfall averages about 0.5 in (12 mm) over the month.
- Average high65°F (18°C)
- Average low45°F (7°C)
- Precipitation5.2 in (131 mm)
- Clear or mostly clear days9
- Snowfall0.5 in (12 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)