Climate almanac
Saint Helens
Oregon, United States · 45.86°, -122.81°
What is the weather like in Saint Helens in September?
In September, Saint Helens is typically 76°F (24°C) during the day and 54°F (12°C) at night. The month brings about 2.6 in (67 mm) of precipitation in total.
- Average high76°F (24°C)
- Average low54°F (12°C)
- Precipitation2.6 in (67 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)