Climate Guide to Seattle's Winter Months: Average Temperatures and Weather Patterns

Seattle, known for its mild and rainy weather, experiences a distinct winter season with unique temperature patterns influenced by the surrounding waters.

Understanding Seattle's Winter Climate

In the Pacific Northwest, Seattle's winter climate stands out as one of the milder compared to most of the 48 contiguous states. While the city does experience periods of near-freezing temperatures and occasional snow, the moderating effect of the Puget Sound and the surrounding Pacific Ocean keeps the overall winter climate significantly more temperate.

General Temperature Ranges

The winter months in Seattle span from November to February, with daytime temperatures rarely dropping below freezing. Expect daytime temperatures to hover between 35 and 45 degrees Fahrenheit, while nights can bottom out at a comfortable 20 degrees or above.

Daytime Temperatures: Typically average between 35 and 45°F. Even on clearance days, these temperatures remain above freezing. Night Temperatures: While these can dip slightly, they rarely go below 20°F.

Wind Chill and Cloud Cover Impact

While the temperatures themselves are generally mild, the air tends to be drier during winter. This can contribute to a more brisk and chilly feeling on windy days, especially when combined with periods of heavy cloud cover. Conversely, clear skies can make for warmer, pleasant winter days.

The Role of Wind Chill: Wind chills can significantly lower the perceived temperature, making it feel even colder. However, in Seattle, the moderating effect of the water keeps these chill effects to a minimum, particularly compared to inland areas.

Regional Climate Comparisons

The milder winter climate of Seattle and the surrounding western Washington region is starkly different from the eastern parts of the state and the East Coast. Eastern Washington and the East Coast experience colder, more severe winters with longer bouts of freezing temperatures and more precipitation, including heavier snowfall.

Seattle's winters are notably shorter and milder, with snowfall occurring on only a few days each year. The outdoor temperature often hovers around 45-50°F during the coldest months, making for a relatively comfortable winter haven in a region otherwise known for harsh winters.

Accurate Temperature Data

For the most precise data on winter temperatures, it's best to consult sources like Their graphs provide a more comprehensive view of winter temperatures, showing that the average temperature on December 31st can be as high as 40°F in Seattle.

Understanding these temperature patterns and weather conditions can help residents and visitors prepare accordingly for Seattle's winter season. Whether you're planning a visit or just want to know what to expect, knowing the temperature trends in Seattle during the winter can make your experience more enjoyable.

Conclusion

Seattle's winter climate offers a unique blend of mild temperatures and frequent rain, making it a distinct and attractive season. By understanding the average winter temperatures and weather patterns, you can better enjoy the charm of this vibrant city during its coldest months.

Are you planning a winter trip or simply curious about the local climate in Seattle? Share your thoughts in the comments or explore more of our detailed articles on travel to Seattle.