Ontario (OR) Precipitation: Average Monthly Rainfall and Snowfall
This graph shows the average amount of rainfall per month in Ontario (Oregon). The numbers are calculated over a 30-year period to provide a reliable average.
- Ontario has dry periods in January, February, April, May, June, July, August, September, October and November.
- On average, December is the wettest month with 45 mm of precipitation.
- On average, July is the driest month with 4 mm of precipitation.
- The average amount of annual precipitation is 232 mm.
Current rainfall in Ontario (OR)
clear and no rain
broken clouds and chance of rain
partly cloudy and chance of slight rain