Sumner, WA Weather


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The most pleasant months of the year for Sumner are August, July and September. In Sumner, there are 3 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Sumner with an average high temperature of 76.4°, which ranks it as cooler than most places in Washington. December is the snowiest month in Sumner with 1.3 inches of snow, and 5 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.

Today's Weather - Sumner, WA

10 AM PST

Mostly Sunny

57°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayMostly Sunny71° / 46°WNW 2 to 6 mph
WednesdayChance Light Rain62° / 47°SW 5 to 8 mph
ThursdayLight Rain56° / 48°SSW 5 to 10 mph
FridayLight Rain57° / 46°SSW 10 mph
SaturdayLight Rain Likely58° / 46°SSW 9 mph
SundayLight Rain Likely57° / 43°SSW 9 to 15 mph
MondayLight Rain Likely56° / 41°SSW 10 to 14 mph

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 Sumner area is 9.1 (10=best), which means it is more comfortable than most places in Washington.

9.1 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January46° 35°
February49° 34°
March53° 37°
April58° 40°
May64° 45°
June70° 49°
July76° 53°
August76° 53°
September70° 48°
October59° 42°
November50° 38°
December44° 33°
Hot, Freezing, Rainy, Snowy Days: Sumner
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January010191
February011161
March06190
April02170
May00150
June10110
July2060
August1060
September0090
October02150
November06201
December012191

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.

Reviews for Sumner
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Sumner is a wonderfully small but growing community nestled in the a beautiful and fertile valley of Western Washington. Only minutes from the major cities, the small  More

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Over 18 years ago

Sumner Washington is located in the Puyallup valley which by definition is flat and walkable. The city adminstration and council are very focused on maintaining a small  More

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