20 Facts About Seattle Weather

Seattle's Rainy Reputation

Seattle is often associated with rain. While it's true that the city sees its fair share of wet weather, there's more to the story.

1. Seattle averages 152 rainy days per year. This means nearly half the year, residents experience some form of precipitation.
2. Despite its rainy reputation, Seattle doesn't rank in the top 10 for annual rainfall in the U.S. Cities like New Orleans and Miami receive more rain.
3. The city's rain is usually light and misty rather than heavy downpours. This makes it more manageable for daily activities.
4. Seattle's rainiest month is November. During this time, the city sees an average of 6.57 inches of rain.
5. July is the driest month, with an average of just 0.79 inches of rain. This makes summer a great time to visit.

The Cloudy Skies

Seattle is known for its overcast skies, which can affect the mood and activities of its residents.

6. Seattle experiences about 226 cloudy days per year. This means the sun is often hidden behind a layer of clouds.
7. The city's overcast skies are due to its location near the Pacific Ocean. Moisture from the ocean creates clouds that linger over the city.
8. Despite the clouds, Seattle still gets around 2,169 hours of sunshine annually. This is more than cities like London and Paris.
9. The cloud cover helps keep temperatures moderate. Seattle rarely experiences extreme heat or cold, making it comfortable year-round.
10. The longest stretch of cloudy days recorded in Seattle lasted 33 days. This occurred in the winter of 2016-2017.

Temperature Trends

Seattle's temperatures are generally mild, thanks to its coastal location.

11. The average high temperature in Seattle during summer is around 75°F. This makes it a pleasant escape from hotter inland areas.
12. Winter temperatures in Seattle average around 45°F. Snow is rare but not unheard of.
13. The hottest temperature ever recorded in Seattle was 108°F on June 28, 2021. This was part of a historic heatwave in the Pacific Northwest.
14. The coldest temperature recorded in Seattle was 0°F on January 31, 1950. Such extreme cold is very unusual for the city.
15. Seattle's proximity to water helps regulate its temperatures. The Puget Sound and Pacific Ocean act as natural air conditioners.

Unique Weather Phenomena

Seattle's weather can be quite unique, with some interesting phenomena occurring throughout the year.

16. Seattle experiences a weather pattern known as the "Puget Sound Convergence Zone." This occurs when winds from the north and south collide, causing localized rain showers.
17. The city occasionally sees "sun breaks," where the sun briefly appears between clouds. These moments are cherished by residents.
18. Thunderstorms are rare in Seattle. The city averages only seven thunderstorm days per year.
19. Fog is common in Seattle, especially in the fall and winter. The fog can create a mystical atmosphere around the city's landmarks.
20. Seattle's weather can change rapidly. It's not uncommon to experience rain, sun, and clouds all in one day.

Seattle's Weather: A Unique Blend

Seattle's weather is a fascinating mix of rain, mild temperatures, and occasional sunshine. Known for its overcast skies, the city actually enjoys less annual rainfall than many other U.S. cities. Summers are typically dry and warm, making it perfect for outdoor activities. Winters are mild, with rare snowfall, but plenty of rain. The city's unique geography, nestled between the Puget Sound and the Cascade Mountains, contributes to its distinct climate. This combination creates microclimates, where weather can vary significantly within short distances. Understanding Seattle's weather helps residents and visitors alike plan their activities and appreciate the city's natural beauty. Whether you're a local or just passing through, knowing these weather facts can enhance your experience in the Emerald City. So, next time you visit, you'll be prepared for whatever the skies may bring.