Zip 98390 (Sumner, WA) Climate

Sumner, WA (98390) has a temperate climate with warm summers and mild winters. It is located in the Pacific Northwest region of the United States and enjoys a humid continental climate, with temperatures rarely exceeding 75°F (24°C) or dipping below 32°F (0°C). Average annual precipitation is around 33 inches (84 cm), mainly occurring between October and April. Winters are relatively dry, with only occasional snowfall. Summers in Sumner are quite warm, with temperatures often reaching the mid-80s Fahrenheit (around 29°C). Temperatures cool off a bit at night, allowing for comfortable sleeping weather.

Sumner (zip 98390), Washington gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sumner (zip 98390) averages 5 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 141 sunny days per year in Sumner (zip 98390). The US average is 205 sunny days.

Sumner (zip 98390) gets some kind of precipitation, on average, 172 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 76 degrees
Winter Low: the January low is 35
Rain: averages 49 inches of rain a year
Snow: averages 5 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 98390 zip code is 7.1 (10=best), which means it is about average compared to other places in Washington.

9.1 Summer - 5.2 Winter

July, August and September are the most pleasant months in the 98390 zip code, while December and January are the least comfortable months.

Climate	Sumner, Washington	United States
	Unlock	38.1 in.
	4.7 in.	Unlock
	Unlock	106.2 days
	141 days	Unlock
	75.7°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	595 ft.	Unlock

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 the 98390 zip code with an average high temperature of 76.4°, which ranks it as cooler than most places in Washington. In the 98390 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 98390 zip code are August, July and September.

In the 98390 zip code, there are 3.2 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

December has the coldest nighttime temperatures for the 98390 zip code with an average of 33.3°. This is about average compared to other places in Washington.

In the 98390 zip code, there are 49.4 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Washington.

In the 98390 zip code, 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 the 98390 zip code 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 the 98390 zip code with 7.7 inches of rain, and the driest month is July with 1.3 inches. The wettest season is Spring with 34% of yearly precipitation and 11% occurs in Autumn, which is the driest season. The annual rainfall of 48.9 inches in the 98390 zip code means that it is wetter than most places in Washington.

November is the rainiest month in the 98390 zip code with 20.2 days of rain, and August is the driest month with only 5.7 rainy days. There are 172.4 rainy days annually in the 98390 zip code, which is rainier than most places in Washington. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 4.7 inches in the 98390 zip code means that it is about average compared to other places in Washington. December is the snowiest month in the 98390 zip code with 1.3 inches of snow, and 5 months of the year have significant snowfall.

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