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Climate and Average Weather Year Round in Seattle Washington, United States. In Seattle, the summers are short, warm, dry, and partly cloudy and the winters are very cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 37°F to 79°F and is rarely below 28°F or above 88°F .
Feb 14, 2024 · Seattle, Washington - Climate and weather forecast by month. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data.
- January is the most humid month in Seattle, Washington, with an average relative humidity of 85% .
- Throughout the year, in Seattle, Washington, there are 84.2 rainfall days , and 5.2" of precipitation is accumulated.
- January through March and November are months with snowfall in Seattle.
- Throughout the year, there are 4.8 snowfall days , and 0.94" of snow is accumulated.
- The months with the lowest UV index are January , February , November and December , with an average maximum UV index of 2 .
- The month with the most snowfall in Seattle, Washington, is February , when snow falls for 1.9 days and typically aggregates up to 0.71" of...
- With an average ocean temperature of 45.3°F , February is the month with the coldest seawater in Seattle, Washington.
- On Sunday, March 12. 2023 , at 2:00 am, Daylight Saving Time starts in Seattle, and the time zone changes from PST to PDT. Daylight Saving Time...
- April through October and December are months without snowfall .
- Temperature
- Snow
- Sun
- Humidity
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- Storms
Seattle's coldest days of the year usually occur in mid December when the daily maximum temperature averages 46 degrees Fahrenheit (8 degrees Celsius) and the minimum averages 37 °F (3 °C). The year's hottest days are normally at the end of July and beginning of August. The average temperature peaks then with daily highs of 79 °F (26 °C) and nightt...
Snow can fall in Seattle during any month from November to March. But more often than not for any individual month, except February, the city sees no snow. Seattle averages just one day a year when the snow covering the ground accumulates to 3 inches (8 cm) or more.
The sun's rays reach the ground in Seattle during 43 percent of daylight hours on average year round, for a total of 1922 hours annually. Typically on 71 days a year the sky is mainly clear, with at most 30 percent cloud cover. Sunlight in Seattle averages 12 hours and 14 minutes a day. The shortest days of the year in mid December have 8 hours and...
The annual average for relative humidity in Seattle ranges throughout the day from 83 percent at 4:00 am to 62 percent at 4:00 pm standard time.
January and December are usually the windiest months for Seattle, while the wind is calmest during August.
Heavy rainstorms are mainly a winter event, most commonly arriving during November to January. Seattle is most likely to get a heavy snowstorm during December. About once a decade the city gets a snow dump of 10 inches (25 cm) or more in a single day. Thunderstorms most commonly appear over Seattle during April and July, although they can arrive du...
Winters in Seattle have an average maximum temperature of between 8°C and 11°C, so snowfall is rare. Summers have an average maximum temperature of 20°C to 25°C. The best time to travel to Seattle in Washington State is from May to September.
Climate and Average Weather Year Round in Washington United States. We show the climate in Washington by comparing the average weather in 2 representative places: Seattle and Spokane. You can add or remove cities to customize the report to your liking. See all locations in Washington.
Seattle, Washington, United States Climate. Weather: 11.34°C/52.41°F, Wind SW at 5.14 km/h, 74% Humidity, 0% Chance of rain
Weather in Seattle for each year since 2010 including average high and low temperatures, total snowfall and precipitation.
