Cornelius, OR has a moderate climate with warm summers and mild winters. Summers typically have temperatures that range from the mid-60s to the upper 80s while winters are generally cooled off by temperatures in the 40s and 50s. The area receives an average of about 37 inches of rain each year, most of which falls during the winter months, helping to keep the ground moist throughout much of the year. Snowfall is rare in Cornelius, but occasionally does occur during the winter months.
Cornelius, Oregon gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Cornelius averages 3 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 140 sunny days per year in Cornelius. The US average is 205 sunny days.
Cornelius gets some kind of precipitation, on average, 157 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 34
Rain: averages 42 inches of rain a year
Snow: averages 3 inches of snow a year