2025 Compare Climate & Weather:
Longview, WA vs Castle Rock, WA

Highlights

On average, there are 139 sunny days per year in Castle Rock. Longview averages 142 sunny days per year. The US average is 205 sunny days.

Castle Rock, Washington gets 60.8 inches of rain, on average, per year. Longview, Washington gets 55.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Castle Rock averages 3.1 inches of snow per year. Longview averages 3.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Castle Rock, Washington
Summer High: the July high is around 77.1 degrees
Winter Low: the January low is 33.8
Rain: averages 60.8 inches of rain a year
Snow: averages 3.1 inches of snow a year

Longview, Washington
Summer High: the July high is around 76.9 degrees
Winter Low: the January low is 33.7
Rain: averages 55.5 inches of rain a year
Snow: averages 3.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Castle Rock is 7.1 (10=best), which means it is about average compared to other places in Washington.

The annual BestPlaces Comfort Index for Longview is 7.1 (10=best), which means it is about average compared to other places in Washington.

Today's Weather - Longview, WA

48°F

Today's Weather - Castle Rock, WA

46°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Longview / Castle Rock

August is the hottest month for Longview with an average high temperature of 78.1°, which ranks it as about average compared to other places in Washington. In Longview, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Longview are August, July and September.

August is the hottest month for Castle Rock with an average high temperature of 78.3°, which ranks it as about average compared to other places in Washington. In Castle Rock, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Castle Rock are August, July and September.

December has the coldest nighttime temperatures for Longview with an average of 33.1°. This is about average compared to other places in Washington.

December has the coldest nighttime temperatures for Castle Rock with an average of 33.0°. This is about average compared to other places in Washington.

In Longview, there are 6.3 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Castle Rock, there are 6.0 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Longview, there are 52.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Castle Rock, there are 57.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In Longview, 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 Castle Rock, 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 Longview with 9.0 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 40% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 55.5 inches in Longview means that it is wetter than most places in Washington.


November is the wettest month in Castle Rock with 9.9 inches of rain, and the driest month is July with 1.0 inches. The wettest season is Spring with 38% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 60.8 inches in Castle Rock means that it is wetter than most places in Washington.

November is the rainiest month in Longview with 22.2 days of rain, and August is the driest month with only 5.4 rainy days. There are 183.2 rainy days annually in Longview, 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.

November is the rainiest month in Castle Rock with 21.3 days of rain, and August is the driest month with only 6.0 rainy days. There are 181.2 rainy days annually in Castle Rock, which is rainier than most places in Washington. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 3.8 inches in Longview means that it is less snowy than most places in Washington.

An annual snowfall of 3.1 inches in Castle Rock means that it is less snowy than most places in Washington.

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

December is the snowiest month in Castle Rock with 1.2 inches of snow, and 3 months of the year have significant snowfall.