Climate almanac
Walla Walla
Washington, United States · 46.06°, -118.34°
What is the weather like in Walla Walla in September?
In September, Walla Walla is typically 77°F (25°C) during the day and 51°F (11°C) at night. The month brings about 0.9 in (23 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low51°F (11°C)
- Precipitation0.9 in (23 mm)
- Clear or mostly clear days17
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)