Climate almanac
Winthrop Harbor
Illinois, United States · 42.48°, -87.82°
What is the weather like in Winthrop Harbor in May?
In May, Winthrop Harbor is typically 52°F (11°C) during the day and 46°F (8°C) at night. The month brings about 4.6 in (116 mm) of precipitation in total.
- Average high52°F (11°C)
- Average low46°F (8°C)
- Precipitation4.6 in (116 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)