Cosmopolis, WA Climate

Cosmopolis, WA has a mild climate throughout the year, with temperatures rarely dropping below freezing in the winter and reaching highs of over 80 degrees Fahrenheit in the summer. The area is known for its mild storms and rain showers, providing an ample amount of precipitation to keep the land well-hydrated and fertile. Winters tend to be slightly cooler with occasional snowfall, but moderate temperatures are maintained due to moist air off of the Pacific Ocean. Overall, Cosmopolis enjoys a pleasant climate throughout each season.

Cosmopolis, Washington gets 74 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Cosmopolis averages 2 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 129 sunny days per year in Cosmopolis. The US average is 205 sunny days.

Cosmopolis gets some kind of precipitation, on average, 189 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 70 degrees
Winter Low: the January low is 37
Rain: averages 74 inches of rain a year
Snow: averages 2 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Cosmopolis is 7.0 (10=best), which means it is less comfortable than most places in Washington.

8.8 Summer - 5.2 Winter

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

Climate	Cosmopolis, Washington	United States
	74.2 in.	38.1 in.
	1.8 in.	27.8 in.
	189.4 days	106.2 days
	129 days	205 days
	70.4°	85.8°
	37.1°	21.7°
	7	7
	2.7	4.3
	20 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 Cosmopolis with an average high temperature of 71.6°, which ranks it as one of the coolest places in Washington. In Cosmopolis, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cosmopolis are August, July and September.

In Cosmopolis, there are 2.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

December has the coldest nighttime temperatures for Cosmopolis with an average of 35.8°. This is one of the warmest places in Washington.

In Cosmopolis, there are 33.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Cosmopolis, 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 Cosmopolis 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 Cosmopolis with 12.3 inches of rain, and the driest month is July with 1.1 inches. The wettest season is Spring with 42% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 74.2 inches in Cosmopolis means that it is one of the wettest places in Washington.

November is the rainiest month in Cosmopolis with 22.3 days of rain, and July is the driest month with only 6.5 rainy days. There are 189.4 rainy days annually in Cosmopolis, which is one of the rainiest 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 1.8 inches in Cosmopolis means that it is one of the least snowy places in Washington. January is the snowiest month in Cosmopolis with 0.8 inches of snow, and 2 months of the year have significant snowfall.