2025 Compare Climate & Weather:
Cathlamet, WA vs Chehalis, WA

Highlights

On average, there are 136 sunny days per year in Chehalis. Cathlamet averages 128 sunny days per year. The US average is 205 sunny days.

Chehalis, Washington gets 51.7 inches of rain, on average, per year. Cathlamet, Washington gets 78.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chehalis averages 2.4 inches of snow per year. Cathlamet averages 4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chehalis, Washington
Summer High: the July high is around 78.4 degrees
Winter Low: the January low is 34.3
Rain: averages 51.7 inches of rain a year
Snow: averages 2.4 inches of snow a year

Cathlamet, Washington
Summer High: the July high is around 75.6 degrees
Winter Low: the January low is 34
Rain: averages 78.8 inches of rain a year
Snow: averages 4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Chehalis is 7.2 (10=best), which means it is more comfortable than most places in Washington.

The annual BestPlaces Comfort Index for Cathlamet is 7.0 (10=best), which means it is less comfortable than most places in Washington.

Today's Weather - Cathlamet, WA

60°F

Today's Weather - Chehalis, WA

67°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Cathlamet / Chehalis

August is the hottest month for Cathlamet with an average high temperature of 76.7°, which ranks it as about average compared to other places in Washington. In Cathlamet, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cathlamet are August, July and September.

August is the hottest month for Chehalis with an average high temperature of 79.5°, which ranks it as warmer than most places in Washington. In Chehalis, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chehalis are July, August and September.

December has the coldest nighttime temperatures for Cathlamet with an average of 33.2°. This is about average compared to other places in Washington.

December has the coldest nighttime temperatures for Chehalis with an average of 33.3°. This is about average compared to other places in Washington.

In Cathlamet, there are 5.3 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Chehalis, there are 7.1 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Cathlamet, there are 58.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Chehalis, there are 58.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

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

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

November is the wettest month in Cathlamet with 13.0 inches of rain, and the driest month is July with 1.2 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 78.8 inches in Cathlamet means that it is one of the wettest places in Washington.


November is the wettest month in Chehalis with 8.5 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 39% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 51.7 inches in Chehalis means that it is wetter than most places in Washington.

November is the rainiest month in Cathlamet with 21.6 days of rain, and August is the driest month with only 6.3 rainy days. There are 183.4 rainy days annually in Cathlamet, which is one of the rainiest places in Washington. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 14% chance of a rainy day.

November is the rainiest month in Chehalis with 20.4 days of rain, and August is the driest month with only 5.1 rainy days. There are 171.0 rainy days annually in Chehalis, which is rainier than most places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 4.0 inches in Cathlamet means that it is less snowy than most places in Washington.

An annual snowfall of 2.4 inches in Chehalis means that it is less snowy than most places in Washington.

February is the snowiest month in Cathlamet with 1.3 inches of snow, and 3 months of the year have significant snowfall.

February is the snowiest month in Chehalis with 0.7 inches of snow, and 3 months of the year have significant snowfall.