Climate almanac
Salem
Illinois, United States · 38.63°, -88.95°
What is the weather like in Salem in May?
In May, Salem is typically 77°F (25°C) during the day and 59°F (15°C) at night. The month brings about 5.2 in (132 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low59°F (15°C)
- Precipitation5.2 in (132 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)