Climate almanac
Oswego
Illinois, United States · 41.68°, -88.35°
What is the weather like in Oswego in April?
In April, Oswego is typically 60°F (16°C) during the day and 41°F (5°C) at night. The month brings about 4.5 in (115 mm) of precipitation in total. Snowfall averages about 2.0 in (50 mm) over the month.
- Average high60°F (16°C)
- Average low41°F (5°C)
- Precipitation4.5 in (115 mm)
- Clear or mostly clear days7
- Snowfall2.0 in (50 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)