Climate almanac
Saint John
Indiana, United States · 41.45°, -87.47°
What is the weather like in Saint John in May?
In May, Saint John is typically 70°F (21°C) during the day and 53°F (12°C) at night. The month brings about 5.1 in (130 mm) of precipitation in total. Snowfall averages about 0.1 in (3 mm) over the month.
- Average high70°F (21°C)
- Average low53°F (12°C)
- Precipitation5.1 in (130 mm)
- Clear or mostly clear days8
- Snowfall0.1 in (3 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)