Climate almanac
Umatilla
Oregon, United States · 45.92°, -119.34°
What is the weather like in Umatilla in September?
In September, Umatilla is typically 84°F (29°C) during the day and 56°F (13°C) at night. The month brings about 0.4 in (9 mm) of precipitation in total.
- Average high84°F (29°C)
- Average low56°F (13°C)
- Precipitation0.4 in (9 mm)
- Clear or mostly clear days17
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)