2025 Compare Climate & Weather:
Corvallis, OR vs Richland, WA

Highlights

On average, there are 196 sunny days per year in Richland. Corvallis averages 159 sunny days per year. The US average is 205 sunny days.

Richland, Washington gets 8.1 inches of rain, on average, per year. Corvallis, Oregon gets 51.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Richland averages 3.6 inches of snow per year. Corvallis averages 5.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Richland, Washington
Summer High: the July high is around 89.9 degrees
Winter Low: the January low is 28.7
Rain: averages 8.1 inches of rain a year
Snow: averages 3.6 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Richland is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

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

Today's Weather - Corvallis, OR

61°F

Today's Weather - Richland, WA

78°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Corvallis / Richland

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.

July is the hottest month for Richland with an average high temperature of 89.9°, which ranks it as one of the hottest places in Washington. In Richland, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Richland are September, June and May.

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

December has the coldest nighttime temperatures for Richland with an average of 27.5°. This is colder than most places in Washington.

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

In Richland, there are 39.9 days annually when the high temperature is over 90°, which is one of the hottest places in Washington.

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 Richland, there are 86.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

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.

In Richland, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

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.


December is the wettest month in Richland with 1.2 inches of rain, and the driest month is August with 0.2 inches. The wettest season is Spring with 38% of yearly precipitation and 14% occurs in Autumn, which is the driest season. The annual rainfall of 8.1 inches in Richland means that it is one of the driest places in Washington.

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.

January is the rainiest month in Richland with 11.5 days of rain, and August is the driest month with only 2.3 rainy days. There are 82.8 rainy days annually in Richland, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 12% chance of a rainy day.

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

An annual snowfall of 3.6 inches in Richland means that it is less snowy than most places in Washington.

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

December is the snowiest month in Richland with 1.4 inches of snow, and 3 months of the year have significant snowfall.