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

What kind of temperatures can you expect in Issaquah during December? Check out this detailed guide to the month’s weather conditions.

Temperatures

Typically, December in Issaquah includes low temperatures and heavy rainfall. Enjoy the winter season during this month. Anticipate daytime temperatures around 6°C, while night temperatures can drop to 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

Issaquah in December falls under the rainy season with heavy rainfall, averaging around 196 mm for the month. Rain is expected on roughly 22 days.

Average sunshine

The month is characterized by fewer sunny days, with roughly 54 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Issaquah. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, April, November and December tend to be characterized by conditions that may not be as optimal.

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

 

Issaquah, monthly averages in December

Min Temperature 1°C  

Max Temperature 6°C  

Chance of Rain 74%  

Precipitation 196 mm  

Rainy days 22 days  

Humidity 80% *  

Windspeed 14 km/h *  

Sunshine 54 hours *  

Percentage Sunshine 20% *  

Data from: Seattle, the United States of America (21 KM, 13 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 Issaquah.

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.