Climate almanac
Mill Plain
Washington, United States · 45.64°, -122.49°
What is the weather like in Mill Plain in January?
In January, Mill Plain is typically 46°F (8°C) during the day and 36°F (2°C) at night. The month brings about 11 in (267 mm) of precipitation in total. Snowfall averages about 4.5 in (114 mm) over the month.
- Average high46°F (8°C)
- Average low36°F (2°C)
- Precipitation11 in (267 mm)
- Clear or mostly clear days4
- Snowfall4.5 in (114 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)