Weather in December in Washington State
Thinking about venturing to Washington State this December and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:
What is the weather like in Washington State in December?
Washington State is a region in the United States of America. The weather in Washington State in December can be quite varied, with temperatures that range from very cold to cold and precipitation levels ranging from low to heavy. The month of December is in the winter season.
Temperatures
During the day the temperature is very cold in Mount Rainier National Park at -6°C and cold in Ilwaco at 9°C. As night falls, temperatures generally drop to 3°C in Ilwaco and -13°C in Mount Rainier National Park . In general, this month stands out as the coldest period throughout the year. Given the lower temperatures, it's essential to be well-prepared. Packing the right winter clothing and necessary accessories can make a significant difference in ensuring your comfort and well-being during this chilly season.
Precipitation
In December, precipitation varies across different areas. From low snow/rainfall in Richland with an average of 29 mm to heavy snow/rainfall in Mount Rainier National Park with 532 mm.Average sunshine
The city Seattle usually sees around 54 hours of sunlight, indicating fewer sunny days.For a closer look at December's conditions in Washington State, see the map below. For a more detailed look at Washington State's yearly weather, check out our Washington State climate page.
Where to go in Washington State in December
perfect weather
pleasant
tolerable
unpleasant
poor
Popular destinations
What is the weather like in December for the 5 most popular destinations in Washington State?
Seattle
In December Seattle generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 2°C and high monthly rainfall. So on average the conditions are poor that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
SeaTac
In December SeaTac generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 2°C and high monthly rainfall. So on average the conditions are poor that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Ocean Shores
In December Ocean Shores generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 4°C and heavy monthly rainfall. So on average the conditions are poor that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Bellevue
In December Bellevue generally has low temperatures with maximum daytime temperatures around 7°C, minimum nighttime temperatures around 2°C and high monthly rainfall. So on average the conditions are poor that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly sun hours
Sun hours
Monthly rainfall
Rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Leavenworth
In December Leavenworth generally has very low temperatures with maximum daytime temperatures around 1°C, minimum nighttime temperatures around -5°C and high monthly snow/rainfall. So on average the conditions are poor that month.
Max temperature
Max temp
Min temperature
Min temp
Monthly snow/rainfall
Snow/rainfall
Monthly rainy days
Rainy days
Weather conditions
Weather
Is your destination not in the list? Have a look at other destinations in Washington State, in the United States of America.
Is December the best time to visit Washington State?
In our view, December might not be the best time to travel to Washington State with often poor weather in Seattle.
Generally speaking, the best visiting conditions can be found in June, July, August and September offering mostly perfect weather in Seattle. In contrast, January, February, March, November and December tend to have poor weather conditions.
Interested in more climate information?
We have much more information about the climate in Washington State.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed 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.