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Seattle weather by month. Click on each chart for more information. Average Temperature in Seattle. The warm season lasts for 2.8 months, from June 20 to September 12, with an average daily high temperature above 72°F. The hottest month of the year in Seattle is August, with an average high of 77°F and low of 58°F.
The average temperature is of 8.4 °C (47 °F), with a minimum of 4.4 °C (39.9 °F) and a maximum of 12.3 °C (54.1 °F). On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -0.5 °C (31 °F). However, it dropped to -3.3 °C (26.1 °F) in March 2009.
Seattle Temperatures: Averages by Month. The numbers here tell you how hot and cold the weather usually is in Seattle, Washington during each month of the year. The average high and low temperatures are listed below monthly and annually for Seattle, in both degrees Fahrenheit and Celsius.
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.
- What is the most humid month in Seattle?January is the most humid month in Seattle, Washington, with an average relative humidity of 85% .
- How much does it rain in Seattle?Throughout the year, in Seattle, Washington, there are 84.2 rainfall days , and 5.2" of precipitation is accumulated.
- When does it snow in Seattle?January through March and November are months with snowfall in Seattle.
- How much does it snow in Seattle?Throughout the year, there are 4.8 snowfall days , and 0.94" of snow is accumulated.
- What are the months with the lowest UV index in Seattle?The months with the lowest UV index are January , February , November and December , with an average maximum UV index of 2 .
- What is the snowiest month in Seattle?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...
- What month is the ocean coldest in Seattle?With an average ocean temperature of 45.3°F , February is the month with the coldest seawater in Seattle, Washington.
- When is Daylight Saving Time (DST) in Seattle?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...
- When it does not snow in Seattle?April through October and December are months without snowfall .
Weather.com brings you the most accurate monthly weather forecast for Seattle, WA with average/record and high/low temperatures, precipitation and more.
average temperature by month Seattle. The warmest month of the year is August, with an average temperature of 19.3 °C | 66.7 °F. December is the coldest month, with temperatures averaging 4.2 °C | 39.6 °F.
The average daily temp is 77.9 °F. The average nightly temp is 61.4 °F. Precipitation total, in. July is the month with least precipitations during the year. The average precipitation totals for this month is 0.4 in. The month with most precipitation total is January. Number of rainy days. This chart shows averages for the last three years.
