Climate almanac
Kelso
Washington, United States · 46.15°, -122.91°
What is the weather like in Kelso in September?
In September, Kelso is typically 74°F (23°C) during the day and 52°F (11°C) at night. The month brings about 2.4 in (62 mm) of precipitation in total.
- Average high74°F (23°C)
- Average low52°F (11°C)
- Precipitation2.4 in (62 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)