Climate almanac
Saint Helens
Oregon, United States · 45.86°, -122.81°
What is the weather like in Saint Helens in May?
In May, Saint Helens is typically 70°F (21°C) during the day and 48°F (9°C) at night. The month brings about 2.9 in (74 mm) of precipitation in total.
- Average high70°F (21°C)
- Average low48°F (9°C)
- Precipitation2.9 in (74 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)