Zip 98611 (Castle Rock, WA) Climate

The climate in 98611 Castle Rock, WA is generally mild and temperate. The summers are warm with average highs reaching into the mid 70s Fahrenheit (24°C) and the winters are cool with average lows reaching into the mid 40s Fahrenheit (4°C). On average, there are approximately 200 sunny days per year in Castle Rock with some wetter seasons from November to April. The area also experiences occasional snowfall throughout the winter months, with an average of 12 inches (30 cm) of snowfall each year.

Castle Rock (zip 98611), Washington gets 61 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Castle Rock (zip 98611) averages 3 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 137 sunny days per year in Castle Rock (zip 98611). The US average is 205 sunny days.

Castle Rock (zip 98611) gets some kind of precipitation, on average, 181 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 77 degrees
Winter Low: the January low is 34
Rain: averages 61 inches of rain a year
Snow: averages 3 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 98611 zip code is 7.1 (10=best), which means it is about average compared to other places in Washington.

9 Summer - 5.1 Winter

July, August and September are the most pleasant months in the 98611 zip code, while December and January are the least comfortable months.

Climate	Castle Rock, Washington	United States
	Unlock	38.1 in.
	3.1 in.	Unlock
	Unlock	106.2 days
	137 days	Unlock
	77.1°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	200 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for the 98611 zip code with an average high temperature of 78.3°, which ranks it as about average compared to other places in Washington. In the 98611 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 98611 zip code are August, July and September.

In the 98611 zip code, there are 6.0 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

December has the coldest nighttime temperatures for the 98611 zip code with an average of 33.0°. This is about average compared to other places in Washington.

In the 98611 zip code, 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 the 98611 zip code, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

Humidity in the 98611 zip code is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.

November is the wettest month in the 98611 zip code 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 the 98611 zip code means that it is wetter than most places in Washington.

November is the rainiest month in the 98611 zip code 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 the 98611 zip code, 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 3.1 inches in the 98611 zip code means that it is less snowy than most places in Washington. December is the snowiest month in the 98611 zip code with 1.2 inches of snow, and 3 months of the year have significant snowfall.

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