Ontario Metro Area, OR Climate

Ontario, OR has a mild and dry climate with hot, dry summers and cool, wet winters. The average yearly temperature is approximately 60°F, with an average daytime high of 79°F in July and an average nighttime low of 42°F in December. Rainfall is generally sparse throughout the year, with an annual average rainfall of just 16 inches. Snowfall can be significant during winter months but typically melts fairly quickly due to the area's moderate temperatures. Overall, the climate in Ontario is well suited for outdoor activities all throughout the year.

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

Ontario Metro Area averages 20 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 210 sunny days per year in Ontario Metro Area. The US average is 205 sunny days.

Ontario Metro Area gets some kind of precipitation, on average, 78 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 91 degrees
Winter Low: the January low is 19
Rain: averages 11 inches of rain a year
Snow: averages 20 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the Ontario metro area is 7.1 (10=best), which means it is less comfortable than most places in Oregon.

8.5 Summer - 5 Winter

June, September and May are the most pleasant months in the Ontario metro area, while December and January are the least comfortable months.

Climate	Ontario, Oregon	United States
	11.2 in.	38.1 in.
	20.3 in.	27.8 in.
	77.8 days	106.2 days
	210 days	205 days
	90.9°	85.8°
	19.3°	21.7°
	7.1	7
	4	4.3
	3438 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for the Ontario metro area with an average high temperature of 90.9°, which ranks it as one of the hottest places in Oregon. In the Ontario metro area, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Ontario metro area are September, June and May.

In the Ontario metro area, there are 46.3 days annually when the high temperature is over 90°, which is one of the hottest places in Oregon.

December has the coldest nighttime temperatures for the Ontario metro area with an average of 19.1°. This is one of the coldest places in Oregon.

In the Ontario metro area, there are 150.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Oregon.

In the Ontario metro area, there are 4.6 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Oregon.

Humidity is low in the Ontario metro area, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

December is the wettest month in the Ontario metro area with 1.6 inches of rain, and the driest month is July with 0.4 inches. The wettest season is Spring with 34% of yearly precipitation and 15% occurs in Autumn, which is the driest season. The annual rainfall of 11.2 inches in the Ontario metro area means that it is one of the driest places in Oregon.

December is the rainiest month in the Ontario metro area with 9.6 days of rain, and August is the driest month with only 2.5 rainy days. There are 77.8 rainy days annually in the Ontario metro area, which is one of the least rainy places in Oregon. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 14% chance of a rainy day.

An annual snowfall of 20.3 inches in the Ontario metro area means that it is snowier than most places in Oregon. December is the snowiest month in the Ontario metro area with 8.2 inches of snow, and 5 months of the year have significant snowfall.

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