2025 Compare Climate & Weather:
Kennewick, WA vs Firth, ID

Highlights

On average, there are 201 sunny days per year in Firth. Kennewick averages 191 sunny days per year. The US average is 205 sunny days.

Firth, Idaho gets 15.2 inches of rain, on average, per year. Kennewick, Washington gets 8.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Firth averages 62.4 inches of snow per year. Kennewick averages 3.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Firth, Idaho
Summer High: the July high is around 82.3 degrees
Winter Low: the January low is 12.3
Rain: averages 15.2 inches of rain a year
Snow: averages 62.4 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Firth is 6.3 (10=best), which means it is less comfortable than most places in Idaho.

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

Today's Weather - Kennewick, WA

57°F

Today's Weather - Firth, ID

49°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Firth with an average high temperature of 82.3°, which ranks it as cooler than most places in Idaho. In Firth, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Firth are August, July and June.

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

December has the coldest nighttime temperatures for Firth with an average of 12.2°. This is colder than most places in Idaho.

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 Firth, there are 8.2 days annually when the high temperature is over 90°, which is cooler than most places in Idaho.

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 Firth, there are 190.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.

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

In Firth, there are 16.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.

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.


May is the wettest month in Firth with 1.9 inches of rain, and the driest month is August with 0.9 inches. The wettest season is Summer with 29% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 15.2 inches in Firth means that it is about average compared to other places in Idaho.

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.

December is the rainiest month in Firth with 10.5 days of rain, and July is the driest month with only 5.3 rainy days. There are 97.7 rainy days annually in Firth, which is about average compared to other places in Idaho. The rainiest season is Spring when it rains 30% of the time and the driest is Autumn with only a 20% chance of a rainy day.

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

An annual snowfall of 62.4 inches in Firth means that it is snowier than most places in Idaho.

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

December is the snowiest month in Firth with 15.5 inches of snow, and 8 months of the year have significant snowfall.