Columbia County, WA Climate

Columbia, WA County has a mild climate with generally warm summers and cool winters. The area experiences very little snowfall throughout the year, and temperatures remain fairly moderate year-round. On average, temperatures range from highs of around 70 degrees Fahrenheit in the summer months to lows of around 40 degrees in the winter months. The county receives an average of about 42 inches of rainfall per year, mostly concentrated in the fall and winter months. Due to its location close to the ocean, Columbia also experiences frequent periods of fog and mist during certain times of the year. Overall, Columbia has a pleasant climate that provides residents with comfortable weather throughout the entire year.

Columbia County, Washington gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Columbia County averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 176 sunny days per year in Columbia County. The US average is 205 sunny days.

Columbia County gets some kind of precipitation, on average, 101 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 87 degrees
Winter Low: the January low is 27
Rain: averages 16 inches of rain a year
Snow: averages 15 inches of snow a year

Bestplaces Comfort Index

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

9 Summer - 5 Winter

June, September and August are the most pleasant months in Columbia County, while December and January are the least comfortable months.

Climate	Columbia, Washington	United States
	15.8 in.	38.1 in.
	14.7 in.	27.8 in.
	101.1 days	106.2 days
	176 days	205 days
	87.2°	85.8°
	26.5°	21.7°
	7.2	7
	3.1	4.3
	2790 ft.	2443 ft.

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.

July is the hottest month for Columbia County with an average high temperature of 87.2°, which ranks it as warmer than most places in Washington. In Columbia County, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Columbia County are June, September and May.

In Columbia County, there are 30.9 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

December has the coldest nighttime temperatures for Columbia County with an average of 25.0°. This is colder than most places in Washington.

In Columbia County, there are 111.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In Columbia County, there are 2.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

Humidity is low in Columbia County, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

November is the wettest month in Columbia County with 2.2 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 33% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 15.8 inches in Columbia County means that it is drier than most places in Washington.

November is the rainiest month in Columbia County with 13.2 days of rain, and August is the driest month with only 3.1 rainy days. There are 101.1 rainy days annually in Columbia County, which is less rainy 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 13% chance of a rainy day.

An annual snowfall of 14.7 inches in Columbia County means that it is snowier than most places in Washington. December is the snowiest month in Columbia County with 5.5 inches of snow, and 5 months of the year have significant snowfall.

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