Average monthly snow and rainfall in Corvallis (OR)
The mean monthly precipitation over the year in Corvallis (Oregon), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: January, March, November and December.
- Corvallis has dry periods in July and August.
- On average, December is the wettest month with 188 mm of precipitation.
- On average, August is the driest month with 8 mm of precipitation.
- The average amount of annual precipitation is 995 mm.
Weather Forecasts for Corvallis (OR)
broken clouds and rain
overcast and heavy rain
overcast and rain