Climate almanac
Mill Plain
Washington, US · 45.64°, -122.49°
What is the climate like in Mill Plain?
The best time to visit Mill Plain is typically July – August, with trip comfort peaking in July (9.0/10). Mill Plain is warmest in August, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 36°F (2°C). The wettest month is typically December and the driest is July; the year sees roughly 76 in of precipitation.
- Best time to visitJuly – August — comfort peaks in July (9.0/10)
- Warmest monthAugust — average high 84°F (29°C)
- Coolest monthJanuary — average low 36°F (2°C)
- Wettest monthDecember (12 in)
- Driest monthJuly (0.4 in)
- Annual precipitation76 in