Snohomish County, Washington 

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Climate in Snohomish County, Washington

Snohomish County, Washington gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Snohomish County averages 6 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 162 sunny days per year in Snohomish County. The US average is 205 sunny days.

Snohomish County gets some kind of precipitation, on average, 171 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 75 degrees
Winter Low: the January low is 35
Rain: averages 46 inches of rain a year
Snow: averages 6 inches of snow a year


BESTPLACES COMFORT INDEX

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

7.2 / 10
August, July and September are the most pleasant months in Snohomish County, while December and January are the least comfortable months.

Climate Averages
  Snohomish, WashingtonUnited States
  45.8 in.38.1 in.
  5.6 in.27.8 in.
  171.4 days106.2 days
  162 days205 days
  74.5°85.8°
  35.2°21.7°
  7.27
  2.74.3
  2128 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.


August is the hottest month for Snohomish County with an average high temperature of 75.5°, which ranks it as cooler than most places in Washington. In Snohomish County, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Snohomish County are August, July and September.


December has the coldest nighttime temperatures for Snohomish County with an average of 33.9°. This is warmer than most places in Washington.


In Snohomish County, there are 1.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.


In Snohomish County, there are 40.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.


In Snohomish County, 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 Snohomish County with 7.2 inches of rain, and the driest month is July with 1.2 inches. The wettest season is Spring with 35% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 45.8 inches in Snohomish County means that it is wetter than most places in Washington.


November is the rainiest month in Snohomish County with 19.7 days of rain, and August is the driest month with only 6.0 rainy days. There are 171.4 rainy days annually in Snohomish County, 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 14% chance of a rainy day.


An annual snowfall of 5.6 inches in Snohomish County means that it is about average compared to other places in Washington. December is the snowiest month in Snohomish County with 2.1 inches of snow, and 4 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF SNOHOMISH COUNTY, WASHINGTON
    ZIP CODES IN SNOHOMISH COUNTY, WASHINGTON
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