2025 Compare Climate & Weather:
Walla Walla, WA vs Kennewick, WA

Highlights

On average, there are 191 sunny days per year in Kennewick. Walla Walla averages 188 sunny days per year. The US average is 205 sunny days.

Kennewick, Washington gets 8.1 inches of rain, on average, per year. Walla Walla, Washington gets 18.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Kennewick averages 3.5 inches of snow per year. Walla Walla averages 9.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Kennewick, 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 3.5 inches of snow a year

Walla Walla, Washington
Summer High: the July high is around 89.2 degrees
Winter Low: the January low is 29.2
Rain: averages 18.6 inches of rain a year
Snow: averages 9.4 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Walla Walla is 7.4 (10=best), which means it is one of the most pleasant places in Washington.

Today's Weather - Walla Walla, WA

59°F

Today's Weather - Kennewick, WA

63°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Walla Walla / Kennewick

July is the hottest month for Walla Walla with an average high temperature of 89.2°, which ranks it as one of the hottest places in Washington. In Walla Walla, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Walla Walla are September, June and May.

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

December has the coldest nighttime temperatures for Walla Walla with an average of 27.6°. This is colder than most places in Washington.

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

In Walla Walla, there are 37.1 days annually when the high temperature is over 90°, which is one of the hottest places in Washington.

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

In Walla Walla, there are 81.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Kennewick, there are 87.1 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Walla Walla, there are 1.1 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

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

November is the wettest month in Walla Walla with 2.4 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 32% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 18.6 inches in Walla Walla means that it is drier than most places in Washington.


December is the wettest month in Kennewick with 1.2 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Spring with 39% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 8.1 inches in Kennewick means that it is one of the driest places in Washington.

December is the rainiest month in Walla Walla with 12.8 days of rain, and August is the driest month with only 2.7 rainy days. There are 104.7 rainy days annually in Walla Walla, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 12% chance of a rainy day.

January is the rainiest month in Kennewick 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 Kennewick, 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 9.4 inches in Walla Walla means that it is snowier than most places in Washington.

An annual snowfall of 3.5 inches in Kennewick means that it is less snowy than most places in Washington.

December is the snowiest month in Walla Walla with 3.3 inches of snow, and 4 months of the year have significant snowfall.

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