Roslyn, WA Climate

Roslyn, WA has a moderate summer climate with mild temperatures and low humidity. During the summer months, temperatures usually reach the mid-80s with nights typically in the mid-60s. Winters are cold and wet, with an average temperature of around 40 degrees Fahrenheit and snowfall of around eight to twelve inches per year. Precipitation is common throughout the year, but most of it falls during the winter months. The area enjoys over 200 sunny days per year, making it an ideal destination for those looking to escape cold weather elsewhere.

Roslyn, Washington gets 29 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Roslyn averages 84 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Roslyn. The US average is 205 sunny days.

Roslyn gets some kind of precipitation, on average, 121 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 80 degrees
Winter Low: the January low is 24
Rain: averages 29 inches of rain a year
Snow: averages 84 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Roslyn is 6.5 (10=best), which means it is one of the least comfortable places in Washington.

9.2 Summer - 3.6 Winter

July, August and June are the most pleasant months in Roslyn, while December and January are the least comfortable months.

Climate	Roslyn, Washington	United States
	29.4 in.	38.1 in.
	84.2 in.	27.8 in.
	121.2 days	106.2 days
	204 days	205 days
	79.6°	85.8°
	23.5°	21.7°
	6.5	7
	2.7	4.3
	2251 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 Roslyn with an average high temperature of 80.1°, which ranks it as warmer than most places in Washington. In Roslyn, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Roslyn are July, August and September.

In Roslyn, there are 13.3 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

December has the coldest nighttime temperatures for Roslyn with an average of 22.6°. This is colder than most places in Washington.

In Roslyn, there are 147.1 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Washington.

In Roslyn, 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 Roslyn, 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 Roslyn with 5.3 inches of rain, and the driest month is August with 0.5 inches. The wettest season is Spring with 41% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 29.4 inches in Roslyn means that it is drier than most places in Washington.

November is the rainiest month in Roslyn with 15.5 days of rain, and August is the driest month with only 3.8 rainy days. There are 121.2 rainy days annually in Roslyn, 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 13% chance of a rainy day.

An annual snowfall of 84.2 inches in Roslyn means that it is one of the snowiest places in Washington. December is the snowiest month in Roslyn with 27.1 inches of snow, and 6 months of the year have significant snowfall.