Climate in Ontario, Oregon

Ontario, Oregon gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Ontario averages 13 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 207 sunny days per year in Ontario. The US average is 205 sunny days.

Ontario gets some kind of precipitation, on average, 79 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 92 degrees
Winter Low: the January low is 20
Rain: averages 11 inches of rain a year
Snow: averages 13 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Ontario is 7.2 (10=best), which means it is about average compared to other places in Oregon.

July is the hottest month for Ontario with an average high temperature of 91.9°, which ranks it as one of the hottest places in Oregon. In Ontario, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ontario are September, June and May.

January has the coldest nighttime temperatures for Ontario with an average of 20.3°. This is one of the coldest places in Oregon.

In Ontario, there are 50.9 days annually when the high temperature is over 90°, which is one of the hottest places in Oregon.

In Ontario, there are 137.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Oregon.

In Ontario, there are 4.0 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Oregon.

December is the wettest month in Ontario with 1.7 inches of rain, and the driest month is August with 0.2 inches. The wettest season is Spring with 37% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 10.6 inches in Ontario means that it is one of the driest places in Oregon.

December is the rainiest month in Ontario with 10.3 days of rain, and July is the driest month with only 2.3 rainy days. There are 78.5 rainy days annually in Ontario, which is one of the least rainy places in Oregon. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 13.2 inches in Ontario means that it is snowier than most places in Oregon. December is the snowiest month in Ontario with 6.5 inches of snow, and 4 months of the year have significant snowfall.

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