Sumner weather in December (Washington State, United States of America)

How does the December weather in Sumner compare to other months? Curious if the timing is right for your trip? Our page offers an in-depth look at the monthly weather conditions.

Temperatures

In December, Sumner typically experiences low temperatures and high rainfall. December is typically considered a winter month. During the daylight hours, temperatures often reach 8°C. After dark they usually decrease to around 1°C. With temperatures often at their lowest, this month is coldest of the year. Ideal for indoor activities, be sure to pack warm clothing.

Precipitation

Sumner in December usually receives high rainfall, averaging around 153 mm for the month. Based on our climate data of the past 30 years, about 21 days of rain are anticipated.

Average sunshine

The area experiences limited sunny days, amounting to roughly 61 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Sumner. June, July, August and September typically offer the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Sumner climate page with graphs.

 

Sumner, monthly averages in December

Min Temperature 1°C  

Max Temperature 8°C  

Chance of Rain 70%  

Precipitation 153 mm  

Rainy days 21 days  

Sunshine 61 hours *  

Percentage Sunshine 23% *  

Data from: Tacoma, the United States of America (16 KM, 10 Miles).

Where to go in the United States of America in December

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Sumner.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.