2025 Compare Climate & Weather:
The Dalles, OR vs Corvallis, OR

Highlights

On average, there are 159 sunny days per year in Corvallis. The Dalles averages 177 sunny days per year. The US average is 205 sunny days.

Corvallis, Oregon gets 51.4 inches of rain, on average, per year. The Dalles, Oregon gets 18.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Corvallis averages 5.4 inches of snow per year. The Dalles averages 13.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Corvallis, Oregon
Summer High: the July high is around 81.6 degrees
Winter Low: the January low is 34.1
Rain: averages 51.4 inches of rain a year
Snow: averages 5.4 inches of snow a year

The Dalles, Oregon
Summer High: the July high is around 86.4 degrees
Winter Low: the January low is 30.1
Rain: averages 18.4 inches of rain a year
Snow: averages 13.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Corvallis is 7.3 (10=best), which means it is more comfortable than most places in Oregon.

The annual BestPlaces Comfort Index for The Dalles is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

Today's Weather - The Dalles, OR

67°F

Today's Weather - Corvallis, OR

76°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: The Dalles / Corvallis

August is the hottest month for The Dalles with an average high temperature of 86.6°, which ranks it as warmer than most places in Oregon. In The Dalles, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for The Dalles are June, September and May.

August is the hottest month for Corvallis with an average high temperature of 82.4°, which ranks it as about average compared to other places in Oregon. In Corvallis, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Corvallis are September, July and August.

December has the coldest nighttime temperatures for The Dalles with an average of 29.5°. This is colder than most places in Oregon.

December has the coldest nighttime temperatures for Corvallis with an average of 33.8°. This is about average compared to other places in Oregon.

In The Dalles, there are 32.7 days annually when the high temperature is over 90°, which is hotter than most places in Oregon.

In Corvallis, there are 12.4 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.

In The Dalles, there are 77.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Oregon.

In Corvallis, there are 45.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In The Dalles, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Oregon.

In Corvallis, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Oregon.

December is the wettest month in The Dalles with 3.6 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Spring with 49% of yearly precipitation and 6% occurs in Autumn, which is the driest season. The annual rainfall of 18.4 inches in The Dalles means that it is drier than most places in Oregon.


December is the wettest month in Corvallis with 9.3 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 45% of yearly precipitation and 5% occurs in Autumn, which is the driest season. The annual rainfall of 51.4 inches in Corvallis means that it is wetter than most places in Oregon.

November is the rainiest month in The Dalles with 15.3 days of rain, and July is the driest month with only 1.7 rainy days. There are 105.0 rainy days annually in The Dalles, which is less rainy than most places in Oregon. The rainiest season is Spring when it rains 40% of the time and the driest is Autumn with only a 8% chance of a rainy day.

January is the rainiest month in Corvallis with 20.5 days of rain, and July is the driest month with only 3.3 rainy days. There are 161.8 rainy days annually in Corvallis, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 10% chance of a rainy day.

An annual snowfall of 13.7 inches in The Dalles means that it is snowier than most places in Oregon.

An annual snowfall of 5.4 inches in Corvallis means that it is snowier than most places in Oregon.

January is the snowiest month in The Dalles with 4.8 inches of snow, and 5 months of the year have significant snowfall.

February is the snowiest month in Corvallis with 2.5 inches of snow, and 3 months of the year have significant snowfall.