2025 Compare Climate & Weather:
Ontario, OR vs Twin Falls, ID

Highlights

On average, there are 210 sunny days per year in Twin Falls. Ontario averages 207 sunny days per year. The US average is 205 sunny days.

Twin Falls, Idaho gets 10.4 inches of rain, on average, per year. Ontario, Oregon gets 10.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Twin Falls averages 18.2 inches of snow per year. Ontario averages 13.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Twin Falls, Idaho
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 20.3
Rain: averages 10.4 inches of rain a year
Snow: averages 18.2 inches of snow a year

Ontario, Oregon
Summer High: the July high is around 91.9 degrees
Winter Low: the January low is 20.3
Rain: averages 10.6 inches of rain a year
Snow: averages 13.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Twin Falls is 7.2 (10=best), which means it is one of the most pleasant places in Idaho.

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

Today's Weather - Ontario, OR

54°F

Today's Weather - Twin Falls, ID

45°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ontario / Twin Falls

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.

July is the hottest month for Twin Falls with an average high temperature of 89.3°, which ranks it as warmer than most places in Idaho. In Twin Falls, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Twin Falls 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.

December has the coldest nighttime temperatures for Twin Falls with an average of 19.7°. This is about average compared to other places in Idaho.

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 Twin Falls, there are 38.4 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

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 Twin Falls, there are 146.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

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.

In Twin Falls, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

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 wettest month in Twin Falls with 1.4 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Summer with 32% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 10.4 inches in Twin Falls means that it is drier than most places in Idaho.

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.

December is the rainiest month in Twin Falls with 9.5 days of rain, and July is the driest month with only 2.5 rainy days. There are 78.5 rainy days annually in Twin Falls, which is less rainy than most places in Idaho. 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 13.2 inches in Ontario means that it is snowier than most places in Oregon.

An annual snowfall of 18.2 inches in Twin Falls means that it is less snowy than most places in Idaho.

December is the snowiest month in Ontario with 6.5 inches of snow, and 4 months of the year have significant snowfall.

December is the snowiest month in Twin Falls with 5.5 inches of snow, and 5 months of the year have significant snowfall.