Steilacoom, WA Climate


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United States / Washington / Seattle-Tacoma-Bellevue Metro Area / Pierce County / Steilacoom / Zip Codes
Steilacoom, WA enjoys a temperate climate that is characterized by mild winters and warm summers. The average high temperatures in the summer months range from 73 to 76 degrees Fahrenheit while the average low temperatures in the winter months range from 35 to 38 degrees Fahrenheit. Precipitation is fairly consistent throughout the year, with an annual average of around 39 inches of rain or snowfall. The area experiences relatively little humidity, which makes for comfortable weather conditions all year round.

Steilacoom, Washington gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 140 sunny days per year in Steilacoom. The US average is 205 sunny days.

Steilacoom gets some kind of precipitation, on average, 151 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 36
Rain: averages 44 inches of rain a year
Snow: averages 6 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Steilacoom is 7.4 (10=best), which means it is one of the most pleasant places in Washington.

9.3 Summer - 5.5 Winter
August, July and September are the most pleasant months in Steilacoom, while December and January are the least comfortable months.

  ClimateSteilacoom, WashingtonUnited States
  44.2 in.38.1 in.
  5.5 in.27.8 in.
  151.3 days106.2 days
  140 days205 days
  77.1°85.8°
  36.4°21.7°
  7.47
  2.64.3
  75 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 Steilacoom with an average high temperature of 77.2°, which ranks it as about average compared to other places in Washington. In Steilacoom, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Steilacoom are August, July and September.
In Steilacoom, there are 2.4 days annually when the high temperature is over 90°, which is cooler than most places in Washington.
December has the coldest nighttime temperatures for Steilacoom with an average of 35.2°. This is warmer than most places in Washington.
In Steilacoom, there are 32.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.
In Steilacoom, 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 Steilacoom 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 Steilacoom with 7.3 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 40% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 44.2 inches in Steilacoom means that it is about average compared to other places in Washington.
November is the rainiest month in Steilacoom with 19.8 days of rain, and August is the driest month with only 4.3 rainy days. There are 151.3 rainy days annually in Steilacoom, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 12% chance of a rainy day.
An annual snowfall of 5.5 inches in Steilacoom means that it is about average compared to other places in Washington. February is the snowiest month in Steilacoom with 2.0 inches of snow, and 4 months of the year have significant snowfall.
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